Box

live_loop :tb303 do
  synth :tb303, note: (octs :c1, 3).tick, release: 0.1, cutoff: rrand(70,120), amp: 1.5
  sleep 0.125
end

live_loop :bass, sync: :tb303 do
  density 1 do
    sample :bd_tek, cutoff: 110, amp: 2
    sample :bd_klub, cutoff: 110, amp: 2
    sleep 0.5
  end
end

Second Version

use_bpm 60

live_loop :sound do
  with_fx :reverb, room: 1, reps: 32, amp: 1 do
    synth :dpulse, note: (scale :c1, :major_pentatonic, num_octaves: 4).choose, release: 0.1, cutoff: rrand(90,110), amp: 2
    synth :tb303, note: (scale :c1, :minor_pentatonic, num_octaves: 4).take(2).choose, release: 0.1, cutoff: rrand(90,110), amp: 1.5
    sleep 0.125
  end
end

live_loop :beats, sync: :sound do
  sample :loop_mika, lpf: 120, amp: 0.4
  sleep 2
end

live_loop :industry, sync: :sound do
  use_synth :tri
  use_synth_defaults attack: 0, sustain: 0.1, decay: 0.1, release: 0.1, amp: 0.4
  sample :loop_industrial, beat_stretch: 4
  sleep 4
end

live_loop :bass, sync: :sound do
  d = (knit 1, 7, 4, 1).tick
  density d do
    sample :bd_klub, cutoff: 110, amp: 2
    sleep 0.5
  end
end