looper.rb

in_thread do
  with_fx :gverb, mix: 0.3, dry: 0, room: 150, spread: 1 do
    live_loop :arp do
      use_synth :beep
      play (chord :b3, :add9, num_octaves: 2).shuffle.pick(3).tick(), release: 3, pan: rrand(-1, 1)
      use_synth :beep
      play (chord :b2, :add9, num_octaves: 2).shuffle.pick(6).tick(), release: 2, pan: rrand(-1, 1)
      use_synth :beep
      play (chord :b4, :add9, num_octaves: 2).shuffle.pick(2).tick(), release: 0.25, amp: 0.125, pan: rrand(-1, 1)
      sleep 0.125
    end
  end
end