Arcade Fire's 'The Suburbs' in Sonic PI ;) Download http://sonic-pi.net and copy paste this Grammy Winning gem ;)

the_suburbs.rb

in_thread do
  loop do
    sample :drum_bass_hard, amp: 2
    sleep 2
  end
end

in_thread do
  loop do
    sleep 1
    sample :drum_snare_hard, amp: 2
    sleep 1
  end
end

in_thread do
  loop do
    sample :drum_cymbal_pedal, amp: 1
    sleep 0.5
  end
end

in_thread do
  loop do
    cue :tick
    #synth = [:pulse, :fm, :tb303].sample
    use_synth :fm
    4.times do
      play chord(:D4, :major)
      sleep 0.5
    end

    4.times do
      play chord(:B4, :minor)
      sleep 0.5
    end

    4.times do
      play chord(:Gb4, :major)
      sleep 0.5
    end

    4.times do
      play chord(:A4, :major)
      sleep 0.5
    end
  end
end

in_thread do
  loop do
    sync :tick
    play_pattern_timed chord(:D4, :major), [0.25, 4], pan: -1
    play_pattern_timed chord(:B4, :minor), [0.25, 4], pan: 1
    play_pattern_timed chord(:Gb4, :major), [0.25, 4], pan: -1
    play_pattern_timed chord(:A4, :major), [0.25, 4], pan: 1
  end
end

riff1 = lambda do
  sleep 0.5
  play :Gb6
  sleep 0.25
  play :Gb6
  sleep 0.25
  play :A6
  sleep 0.35
  play :B6
  sleep 0.5
  play :Gb6
end

riff2 = lambda do
  sleep 2.65
  play :Gb6
  sleep 0.5
  play :E6
  sleep 0.5
  play :Db6
  sleep 0.25
  play :E6
end

riff3 = lambda do
  sleep 1.75
  play :Db6
  sleep 0.35
  play :Db6
  sleep 0.5
  play :Db6
  sleep 0.25
  play :B5
  sleep 0.5
  play :A5
  sleep 0.25
  play :B5
  sleep 0.25
  play :Db6
  sleep 0.25
  play :Db6
end

verse = lambda do
  [riff1, riff2, riff3, riff2, riff3, riff2].map(&:call)
end

chorus_riff1 = lambda do
  sleep 0.5
  play :Db7
  sleep 0.5
  play :B6
  sleep 0.5
  play :A6
  sleep 0.5
  play :Ab6
  sleep 0.85
  play :Db6
  sleep 0.15
  play :E6
  sleep 0.35
  play :Gb6
end

chorus_riff2 = lambda do
  sleep 1.1
  play :Gb6
  sleep 0.5
  play :E6
  sleep 0.5
  play :D6
  sleep 0.5
  play :Db6
  sleep 0.85
  play :D6
  sleep 0.15
  play :Db6
  sleep 0.35
  play :A5
end

chorus = lambda do
  sample :drum_splash_soft, amp: 2
  [chorus_riff1, chorus_riff2].map(&:call)
  sample :drum_splash_soft, amp: 2
end

verse.call
sleep 2.25
in_thread do
  loop do
    sample :drum_cymbal_soft, amp: 2
    sleep 0.5
  end
end
chorus.call
sleep 0.7 
chorus.call

definitely some timing/rest issues in the chorus melody...but fun stuff :)

Think I fixed the timing issues

Wicked! One quick tip - you'll definitely benefit from reading the help sections on live_loop and live coding in general :)