20191222_sonic_pi.rb

with_fx :echo do
  live_audio :in, amp: 2
end

live_loop :a do
  use_synth :hollow
  with_fx :echo do
    play 60, release: 0.2
  end
  sleep 1
end

live_loop :b do
  sync :a
  use_synth :hollow
  sleep 0.5
  (rrand_i 1, 4).times do
    play scale(60, :aeolian).pick, release: 0.2, pan: (rrand -1, 1)
  end
end