My first Sonic Pi thing

sick_of_losing_soulmates.rb

# Run this in Sonic Pi:              https://sonic-pi.net/
# Sick of Losing Soulmates by Dodie: https://youtu.be/mHUIoikgKT0
# Inspired by Deerful's cover:       https://youtu.be/sfaEBsloiQk

use_synth :pluck
use_bpm 75

define :tab do |t|
  t.split('').map {|n| note(:e2) + n.to_i }
end

verse  = tab( '55772233' * 4)
pre    = tab(('75923333' * 4)[0...-1] + '2')
chorus = tab(('3335777766115552' * 2)[0...-1] + '5')
bridge = verse[0...-1] + tab('2')
song   = (verse + pre + chorus) * 2 + bridge + chorus

live_loop :guitar do
  low = song.tick
  stop unless low
  changed = song.look(offset: -1) != low
  [changed || look.even? ? low : :r, :d3, low, :d3].each do |n|
    use_bpm_mul 0.99 if song.length - look < 12
    play n
    sleep 0.25
  end
end