Hello by Adele written for Sonic Pi

hello.rb

# Hello... World
use_bpm 75
use_synth :fm

in_thread do
  loop do
    cue :tick
    sleep 1
  end
end

in_thread do
  # We need a beat!
  160.times do
    sync :tick
    sample :drum_heavy_kick
  end
end

in_thread(name: :chord_progression) do
  20.times do
    # Two measure chord progression.
    play_chord (chord :F, :minor), release: 4
    sleep 1.5
    play_chord (chord :Af, :major), release: 4
    sleep 2.5

    play_chord (chord :Ef, :major), release: 4
    sleep 1.5
    play_chord (chord :Df, :major), release: 4
    sleep 2.5
  end
end

def play_note(note, duration)
  play note, release: duration + 0.5
  sleep duration
end

in_thread(name: :melody) do
  # Intro
  sleep 4
  sleep 3.75

  verse_1
  verse_2
  2.times do
    chorus
  end
end

define :verse_1 do
  use_synth :blade

  # He-
  play_note :Bf3, 0.25

  # llo...
  play_note :C4, 3

  # It's me...
  play_note :Bf3, 0.5
  play_chord [:G3, :Bf3], release: 3.5, amp: 2
  sleep 3.25

  # I was...
  play_note :Af3, 0.5
  play_note :C4, 0.25

  # Wondering
  play_chord [:Af3, :C4], release: 1.5, amp: 2
  sleep 0.75
  play_note :C4, 0.25
  play_note :C4, 0.75

  # If after all
  play_note :C4, 0.25
  play_note :C4, 0.75
  play_note :Bf3, 0.25
  play_note :Bf3, 0.75

  # These years
  play_note :Af3, 0.25
  play_chord [:G3, :Bf3], release: 1.5, amp: 2
  sleep 0.75

  # You'd like to meet.
  play_note :C4, 0.25
  play_note :Bf3, 0.75
  play_note :F3, 0.25
  play_note :Af3, 1.25

  # To go...
  play_note :Af3, 0.25
  play_note :C4, 0.50

  # o-o-ver...
  play_chord [:Af3, :C4], release: 1.5, amp: 2
  sleep 0.75
  play_note :Bf3, 0.25
  play_note :Af3, 2.25

  # ev-ery-
  play_note :Bf3, 0.25
  play_note :Bf3, 0.50

  # thing...
  play_chord [:G3, :Bf3], release: 3.5, amp: 2
  sleep 2.75

  # They say that time's
  play_note :C4, 0.5
  play_note :C4, 0.5
  play_note :C4, 0.25
  play_note :C4, 0.75

  # supposed to heal
  play_note :C4, 0.25
  play_note :C4, 0.75
  play_note :C4, 0.25
  play_note :C4, 0.75

  # ya,
  play_note :Bf3, 0.25

  # but I ain't
  play_note :Af3, 0.25
  play_note :Af3, 0.25
  play_note :Bf3, 0.25

  # done much
  play_note(:Bf3, 0.75)
  play_note(:Bf3, 0.75)


  # heal-ing...
  play_note :Af3, 0.75
  play_note :Af3, 1

  # <pause>
  sleep 1.25
end

define :verse_2 do
  use_synth :blade

  # He-
  play_note :Bf4, 0.25

  # llo...
  play_chord [:Af4, :C5], release: 3.5, amp: 2
  sleep 3

  # can you hear me?
  play_note :Bf4, 0.25
  play_note :Bf4, 0.25
  play_chord [:G4, :Bf4], release: 1, amp: 2
  sleep 0.50
  play_note :C5, 2.75

  # I'm in California
  play_note :Af4, 0.5
  play_note :C5, 0.25
  play_note :C5, 0.75
  play_note :C5, 0.25
  play_note :C5, 0.75
  play_note :C5, 0.25

  # Dreaming
  play_chord [:Af4, :C5], release: 1.5, amp: 2
  sleep 0.75
  play_note :Bf4, 0.25

  # About who we used to be.
  play_note :Bf4, 0.75
  play_note :Af4, 0.25
  play_chord [:G4, :Bf4], release: 1.5, amp: 2
  sleep 0.75
  play_note :C5, 0.25
  play_note :Bf4, 0.75
  play_note :F4, 0.25
  play_note :Af4, 1

  # When we were...
  play_note :Af4, 0.25
  play_note :Af4, 0.25
  play_note :C5, 0.50

  # young-er-rr
  play_note :C5, 0.75
  play_note :Bf4, 0.25
  play_note :Af4, 2.50

  # And free...
  play_note :Bf4, 0.50
  play_chord [:G4, :Bf4], release: 4, amp: 2
  sleep 3.25

  # I've forgotten.
  play_note :Af4, 0.50
  play_note :C5, 0.25
  play_note :C5, 0.75
  play_note :C5, 0.25

  # How it felt
  play_note :C5, 0.75
  play_note :C5, 0.25
  play_note :C5, 0.75

  # before
  play_note :Bf4, 0.25
  play_note :Bf4, 0.75

  # the world fell at our feet,
  play_note :Af4, 0.25
  play_note :Bf4, 0.75
  play_note :C5, 0.25
  play_note :Bf4, 0.75
  play_note :F4, 0.25
  play_note :Af4, 0.75

  # There's such a difference.
  play_note :Af4, 0.50
  play_note :Af4, 0.50
  play_note :C5, 0.50
  play_note :C5, 1
  play_note :Bf4, 0.25
  play_note :Af4, 1.75

  sleep 0.50

  # Between us
  play_note :Ef5, 0.25
  play_note :Ef5, 1.25
  play_note :C5, 0.50
  play_note :Df5, 0.25
  play_note :C5, 0.25
  play_note :Bf4, 0.25
  play_note :Af4, 0.75

  # And a
  play_note :Af4, 0.50
  play_note :C5, 0.50

  # Million
  play_note :C5, 1
  play_note :Bf4, 0.50
  play_note :Bf4, 1.0
  play_note :Af4, 0.50

  # Miles
  play_note :Af4, 5
end

define :chorus do
  sync :tick
  use_synth :blade
  use_synth_defaults amp: 2

  # Hello from the other
  play_chord [:F3, :C3], release: 1.5
  sleep 0.50
  play_note :F3, 0.50
  play_note :Af3, 0.50
  play_chord [:Df3, :F3, :Af3], release: 1, amp: 3
  sleep 0.50
  play_chord [:Df3, :F3, :Bf3], release: 1, amp: 3
  sleep 0.50
  play_chord [:Df3, :F3, :Bf3], release: 1, amp: 3
  sleep 0.50

  # si-i-ide
  play_chord [:F3, :Bf3], release: 2.5, amp: 3
  sleep 2.5
  play_chord [:Ef3, :Af3], release: 2, amp: 3
  sleep 1
  play_note :F3, 1

  # I must have called a thousand
  play_note :F3, 0.50
  play_chord [:C3, :F3], release: 1, amp: 3
  sleep 0.50
  play_note :F3, 0.50
  play_note :Af3, 0.50
  play_chord [:C3, :F3, :Af3], release: 1, amp: 3
  sleep 0.50
  play_note :Bf3, 0.50
  play_note :Bf3, 0.50

  # t-i-imes...
  play_note :Bf3, 1.25
  play_note :C4, 0.25
  play_note :Bf3, 1
  play_note :Af3, 1.25

  # To tell you
  play_note :Af3, 0.25
  play_chord [:Ef4, :Ef5], release: 1, amp: 2
  sleep 0.50
  play_note :Bf3, 0.25
  play_note :Af3, 0.75

  # I'm sorry.
  play_note :C4, 1
  play_note :Af3, 1
  play_note :Af3, 0.75

  # For everything that I've done,
  play_note :Af3, 0.25
  play_note :Af3, 0.25
  play_note :Af3, 0.25
  play_note :Af3, 0.50
  play_note :G3, 0.50
  play_note :F3, 0.50
  play_note :Ef3, 0.75

  # But when I call,
  play_note :Ef3, 0.25
  play_note :Ef3, 0.50
  play_note :Ef4, 0.50
  play_note :Af3, 1

  # You never...
  play_note :C4, 1
  play_note :Af3, 0.75
  play_note :Af3, 0.125
  play_note :F3, 0.125
  play_note :Ef3, 1.5

  # Seem to be home.
  play_note :Af3, 0.50
  play_note :G3, 0.50
  play_note :F3, 0.50
  play_note :Ef3, 1.5

  # <pause>
  sleep 1
end