Anyone Can Play Guitar - Speaker Deck

Anyone Can Play Guitar

by Kevin Murphy

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@kevin j m ruby.social kevinjmurphy.com Anyone Can Play Guitar Kevin Murphy 🎸 🔊 🎛

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@kevin j m ruby.social kevinjmurphy.com Anyone Can Play Guitar Kevin Murphy 🎸 🔊 🎛

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📷: Fred Seibert CC BY-NC-ND 2.0

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📷: Jason Lam CC BY 2.0

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📷: Paul Lannuier CC BY-NC-ND 2.0

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it. Floor it. That's technical talk.

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Technical Talk

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Kevin Murphy @kevin j m @kevin j [email protected]

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@kevin j m ruby.social kevinjmurphy.com Technical Talk class Guitar end

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@kevin j m ruby.social kevinjmurphy.com Technical Talk class Guitar def initialize end end

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings class String end

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings class GuitarString end

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings class GuitarString def heavy? end end

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings 9 11 16 24 32 42 Common Gauge

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings 9 11 16 24 32 42 13 15 19 28 38 58 Common Gauge SRV Gauge

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings class GuitarString def heavy? end end

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@kevin j m ruby.social kevinjmurphy.com Use Heavy Strings class GuitarString def heavy? gauge_number > common_gauge_number end end

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings

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@kevin j m ruby.social kevinjmurphy.com 🎸Use Domain Terms

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low

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@kevin j m ruby.social kevinjmurphy.com Tune Low Standard E B G D A E

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@kevin j m ruby.social kevinjmurphy.com Tune Low Eb Bb Gb Db Ab Eb Standard Down Half Step E B G D A E

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) case tuning end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) case tuning when :standard standard_tuning end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) case tuning when :standard standard_tuning when :down_half_step down_half_step_tuning end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) case tuning when :standard standard_tuning when :down_half_step down_half_step_tuning … end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) case tuning when :standard when :down_half_step when :drop_d when :open_a when :modal_c end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard); end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard); end def standard_tuning; end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard); end def standard_tuning; end def down_half_step_tuning; end end methods with similar names Pick out

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@kevin j m ruby.social kevinjmurphy.com class Guitar def tune(tuning = :standard); end def standard_tuning; end def down_half_step_tuning; end def drop_d_tuning; end end Tune Low methods with similar names Pick out

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard); end def standard_tuning; end def down_half_step_tuning; end def drop_d_tuning; end def open_a_tuning; end end grouped related behavior Pick out

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) Tuner.new end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) Tuner.new(self) end end

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@kevin j m ruby.social kevinjmurphy.com Tune Low class Guitar def tune(tuning = :standard) Tuner.new(self) .tune(tuning) end end

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low

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@kevin j m ruby.social kevinjmurphy.com 🎸Extract Related Behavior

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard

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@kevin j m ruby.social kevinjmurphy.com Play Hard > a_string = GuitarString.new

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@kevin j m ruby.social kevinjmurphy.com Play Hard > a_string = GuitarString.new > a_string.tune(note: :a)

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@kevin j m ruby.social kevinjmurphy.com > a_string.pluck(fret: 0) Play Hard

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@kevin j m ruby.social kevinjmurphy.com Play Hard A > a_string.pluck(fret: 0) => :a

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@kevin j m ruby.social kevinjmurphy.com > a_string.pluck(fret: 1) Play Hard

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@kevin j m ruby.social kevinjmurphy.com > a_string.pluck(fret: 1) => :b_flat Play Hard Bb

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@kevin j m ruby.social kevinjmurphy.com > a_string.pluck(fret: 2) => :b Play Hard B

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@kevin j m ruby.social kevinjmurphy.com > a_string.pluck(fret: 3) => :c Play Hard C

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@kevin j m ruby.social kevinjmurphy.com Play Hard class Guitar def pick(string:, fret:) end end

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@kevin j m ruby.social kevinjmurphy.com Play Hard class Guitar def pick(string:, fret:) @strings[string -1].pluck(fret: fret) end end

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard

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@kevin j m ruby.social kevinjmurphy.com 🎸Compose Collaborators

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it.

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@kevin j m ruby.social kevinjmurphy.com Floor It > guitar = Guitar.new

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@kevin j m ruby.social kevinjmurphy.com Floor It > guitar = Guitar.new > guitar.restring(gauge_set: :srv)

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@kevin j m ruby.social kevinjmurphy.com Floor It > guitar = Guitar.new > guitar.restring(gauge_set: :srv) > guitar.tune(:down_half_step)

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play => a, e, g_flat, e, g, e, g_flat, e d, a, b, a, c, a, b, a

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@kevin j m ruby.social kevinjmurphy.com > guitar.pick(string: 5, fret: 1) => :a Play Hard A2

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@kevin j m ruby.social kevinjmurphy.com > guitar.pick(string: 3, fret: 3) => :a Play Hard A3

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@kevin j m ruby.social kevinjmurphy.com > guitar.pick(string: 3, fret: 3) => :a Play Hard A3 A2

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it.

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it. Floor it.

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play => a2, e3, g_flat3, e3, g3, e3, g_flat3, e3 d3, a3, b3, a3, c4, a3, b3, a3

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@kevin j m ruby.social kevinjmurphy.com Floor It class GuitarString def pluck(fret:) end end

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@kevin j m ruby.social kevinjmurphy.com Floor It class GuitarString def pluck(fret:) [note, octave] end end

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@kevin j m ruby.social kevinjmurphy.com Floor It note = guitar.pick(hand_position)

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@kevin j m ruby.social kevinjmurphy.com Floor It note = guitar.pick(hand_position) "#{note.first}#{note.last}"

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@kevin j m ruby.social kevinjmurphy.com Floor It note = guitar.pick(hand_position) "#{note.first}#{note.last}" unclear names Pick out

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@kevin j m ruby.social kevinjmurphy.com class GuitarString def pluck(fret:) end end [note, octave] Floor It

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@kevin j m ruby.social kevinjmurphy.com class GuitarString def pluck(fret:) end end Note.new(self, fret) Floor It

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@kevin j m ruby.social kevinjmurphy.com Floor It class Note def value; end def octave; end end

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@kevin j m ruby.social kevinjmurphy.com note = guitar.pick(hand_position) "#{note.first}#{note.last}" Floor It

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@kevin j m ruby.social kevinjmurphy.com note = guitar.pick(hand_position) "#{note.value}#{note.octave}" Floor It

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@kevin j m ruby.social kevinjmurphy.com note = guitar.pick(hand_position) "#{note.value}#{note.octave}" Floor It

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@kevin j m ruby.social kevinjmurphy.com Floor It class Note def value; end def octave; end end

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@kevin j m ruby.social kevinjmurphy.com Floor It class Note def value; end def octave; end def to_s "#{value[0].upcase}#{'b' if flat?}#{octave}" end end

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@kevin j m ruby.social kevinjmurphy.com Floor It note = guitar.pick(hand_position) "#{note.value}#{note.octave}"

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@kevin j m ruby.social kevinjmurphy.com Floor It guitar.pick(hand_position).to_s

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play

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@kevin j m ruby.social kevinjmurphy.com Floor It > song = Blues::Shuffle.new(guitar) > song.play => A2, E3, Gb3, E3, G3, E3, Gb3, E3 D3, A3, B3, A3, C4, A3, B3, A3

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it. Floor it.

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@kevin j m ruby.social kevinjmurphy.com 🎸Elevate Primitives to Objects

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📷: Bob Bissett Stevie Ray Vaughan CC BY-SA 4.0 I use heavy strings, tune low, play hard, and fl oor it. Floor it. That's technical talk.

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📷: Paul Lannuier CC BY-NC-ND 2.0

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@kevin j m ruby.social kevinjmurphy.com 📷: Tony Cuozzo CC BY 2.0

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Stevie Ray Vaughan @kevin j m The problem with taking amps to a shop is that they come back sounding like another amp. 📷: Paul Lannuier CC BY-NC-ND 2.0

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@kevin j m ruby.social kevinjmurphy.com Amp class Amplifier end

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@kevin j m ruby.social kevinjmurphy.com Amp class Amplifier def amplify(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Amp class Amplifier def amplify(sound) pre_amp_stage(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Amp class Amplifier def amplify(sound) pre_amp_stage(sound) power_amp_stage(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Tube Amp 📷: Kevin Murphy

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@kevin j m ruby.social kevinjmurphy.com class TubeAmp end Tube Amp

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@kevin j m ruby.social kevinjmurphy.com class TubeAmp def pre_amp_tone end end Tube Amp

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@kevin j m ruby.social kevinjmurphy.com class TubeAmp def pre_amp_tone if low_volume? || mid_volume? "💡" end end end Tube Amp Volume 0 10 Gain 0 10

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@kevin j m ruby.social kevinjmurphy.com class TubeAmp def pre_amp_tone if low_volume? || mid_volume? "💡" elsif high_volume? "🔥" end end end Tube Amp Volume 0 10 Gain 0 10

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@kevin j m ruby.social kevinjmurphy.com Tube Amp > amp = TubeAmp.new > amp.weight => :heavy

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@kevin j m ruby.social kevinjmurphy.com Tube Amp class TubeAmp end

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@kevin j m ruby.social kevinjmurphy.com Tube Amp class TubeAmp < Amplifier end

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@kevin j m ruby.social kevinjmurphy.com Tube Amp class TubeAmp < Amplifier end > amp = TubeAmp.new

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@kevin j m ruby.social kevinjmurphy.com Tube Amp class TubeAmp < Amplifier end > amp = TubeAmp.new > amp.respond_to?(:amplify)

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@kevin j m ruby.social kevinjmurphy.com Tube Amp class TubeAmp < Amplifier end > amp = TubeAmp.new > amp.respond_to?(:amplify) => true

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp 📷: Kevin Murphy

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp end

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp def pre_amp_tone end end

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp def pre_amp_tone "🫙" end end

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp def pre_amp_tone "🫙" end end Volume 0 10 Gain 0 10

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp def pre_amp_tone "🫙" end end Volume 0 10 Gain 0 10

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp > amp = SolidStateAmp.new > amp.weight => :light

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp end

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp < Amplifier end

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp < Amplifier end > amp = SolidStateAmp.new

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp < Amplifier end > amp = SolidStateAmp.new > amp.respond_to?(:amplify)

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@kevin j m ruby.social kevinjmurphy.com Solid State Amp class SolidStateAmp < Amplifier end > amp = SolidStateAmp.new > amp.respond_to?(:amplify) => true

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@kevin j m ruby.social kevinjmurphy.com 🔊Inherit to Specialize

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp 📷: Kevin Murphy

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < TubeAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < TubeAmp, SolidStateAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < TubeAmp, SolidStateAmp end (irb):2: syntax error, unexpected ',' expecting ';' or '\n'

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class Amplifier def amplify(sound) pre_amp_stage(sound) power_amp_stage(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class Amplifier def amplify(sound) pre_amp_stage(sound) power_amp_stage(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module TubePreAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module TubePreAmp def pre_amp_tone end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module TubePreAmp def pre_amp_tone if low_volume? || mid_volume? "💡" elsif high_volume? "🔥" end end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp end > amp = HybridAmp.new(volume: 10)

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp end > amp = HybridAmp.new(volume: 10) > amp.pre_amp_tone

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp end > amp = HybridAmp.new(volume: 10) > amp.pre_amp_tone => "🔥"

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class Amplifier def amplify(sound) pre_amp_stage(sound) power_amp_stage(sound) end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module SolidStatePowerAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module SolidStatePowerAmp def power_amp_weight end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp module SolidStatePowerAmp def power_amp_weight :light end end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp, SolidStatePowerAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10)

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10) > amp.power_amp_weight

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10) > amp.power_amp_weight => :light

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@kevin j m ruby.social kevinjmurphy.com 🔊Compose to Share Behavior

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp include TubePreAmp, SolidStatePowerAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < Amplifier include TubePreAmp, SolidStatePowerAmp end

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < Amplifier include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10)

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < Amplifier include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10) > amp.respond_to?(:amplify)

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@kevin j m ruby.social kevinjmurphy.com Hybrid Amp class HybridAmp < Amplifier include TubePreAmp, SolidStatePowerAmp end > amp = HybridAmp.new(volume: 10) > amp.respond_to?(:amplify) => true

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Stevie Ray Vaughan @kevin j m I fi gured out how to get the guitar to rumble. 📷: Paul Lannuier CC BY-NC-ND 2.0

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > amp = SolidStateAmp.new(volume: 5)  

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > amp = SolidStateAmp.new(volume: 5) > amp.turn_on  

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > amp = SolidStateAmp.new(volume: 5) > amp.turn_on   > guitar = Guitar.new

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > amp = SolidStateAmp.new(volume: 5) > amp.turn_on   > guitar = Guitar.new > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > amp = SolidStateAmp.new(volume: 5) > amp.turn_on   > guitar = Guitar.new > song = Blues::Shuffle.new(guitar) > song.play { |sound| amp.amplify(sound) }

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📷: Kevin Murphy

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar) > song.play

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize @amplifier = SolidStateAmp.new(volume: 5) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def pick(string:, fret:) note = @strings[string -1].pluck(fret: fret) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def pick(string:, fret:) note = @strings[string -1].pluck(fret: fret) @amplifier.amplify(note) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar) > song.play

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar) > song.play => A2🫙🔊[5]…D3🫙🔊[5]…A2🫙🔊[5]…E3🫙🔊[5]

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize @amplifier = SolidStateAmp.new(volume: 5) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize @amplifier = TubeAmp.new(volume: 9) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > guitar = Guitar.new > song = Blues::Shuffle.new(guitar) > song.play => 🔇🔇[0]…D3💡🔈[1]…A2💡🔉[6]…E3🔥🔊[9]

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize @amplifier = TubeAmp.new(volume: 9) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize(amplifier: nil) end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble class Guitar def initialize(amplifier: nil) @amplifier = amplifier end end

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > solid_state_amp = SolidStateAmp.new(volume: 5) > Guitar.new(amplifier: solid_state_amp)

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@kevin j m ruby.social kevinjmurphy.com Hear the Rumble > solid_state_amp = SolidStateAmp.new(volume: 5) > Guitar.new(amplifier: solid_state_amp) > tube_amp = TubeAmp.new(volume: 9) > Guitar.new(amplifier: tube_amp)

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@kevin j m ruby.social kevinjmurphy.com 🎛Inject for Flexibility

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📷: Bob Bissett CC BY-SA 4.0

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@kevin j m ruby.social kevinjmurphy.com Choices, Choices, Choices class HybridAmp < Amplifier

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@kevin j m ruby.social kevinjmurphy.com Choices, Choices, Choices class HybridAmp < Amplifier include TubePreAmp

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@kevin j m ruby.social kevinjmurphy.com Choices, Choices, Choices class HybridAmp < Amplifier include TubePreAmp class Guitar def tune = Tuner.new(self).tune

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@kevin j m ruby.social kevinjmurphy.com Choices, Choices, Choices class HybridAmp < Amplifier include TubePreAmp class Guitar def tune = Tuner.new(self).tune class Guitar def initialize(amplifier:)

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new  

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new   Consistency 0 10

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new   Flexibility 0 10

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)  

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)   0 10 Flexibility

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)   > guitar.tune(:down_half_step)

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)   > guitar.tune(:down_half_step) collaborators to extract Pick out

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)   > guitar.tune(:down_half_step) > song = Blues::Shuffle.new(guitar)

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@kevin j m ruby.social kevinjmurphy.com Model YOUR Reality > amp = HybridAmp.new > guitar = Guitar.new(amplifier: amp)   > guitar.tune(:down_half_step) > song = Blues::Shuffle.new(guitar) > song.play

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Stevie Ray Vaughan @kevin j m I don't know the names of what it is I'm doing. 📷: Paul Lannuier CC BY-NC-ND 2.0

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Stevie Ray Vaughan @kevin j m I learned how to make the sounds with my mouth and then copied that with my guitar. 📷: Paul Lannuier CC BY-NC-ND 2.0

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@kevin j m ruby.social kevinjmurphy.com Make the Sounds > guitar.plug_in(amplifier: SonicPiAmp.new)

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@kevin j m ruby.social kevinjmurphy.com Make the Sounds > guitar.plug_in(amplifier: SonicPiAmp.new) > song.play

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📷: Kevin Murphy kevinjmurphy.com/play-guitar @kevin j m @kevin j [email protected]

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📷: Kevin Murphy kevinjmurphy.com/play-guitar @kevin j m @kevin j [email protected]

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