20200316_sonic_pi.rb

live_loop :a do
  sample :bd_haus
  sleep 1
end

live_loop :b do
  sync :a
  use_synth :tb303
  with_fx :echo, mix: rand do
    c = line(40, 90, steps: 16).tick
    play 48, release: 0.2, cutoff: c, pan: -0.5
    play scale(48, :blues_major).choose, release: 0.2, cutoff: c, pan: 0.5
  end
end

live_loop :c do
  #sync :a
  use_synth :dpulse
  play 60, cutoff: 50, release: 1.5
  play (ring 69, 67).stretch(8).tick, cutoff: 50, release: 1.5
  play 72, cutoff: 50, release: 1.5
  sleep 1
end