this should show the difference in syncing cues across multiple live loops (Sonic Pi v3.1.0 vs 2.11.1)

test_live_loops

# Use Sonic Pi v2.x to run below snippet.
# If You use v3.x + then it'll sound other than intended.
# More info: https://github.com/samaaron/sonic-pi/issues/1979
set_volume! 1
use_bpm 125

live_loop :beats do
  8.times do
    sample :bd_haus, amp: 0.5
    sleep 1
  end
end

live_loop :sample_loop do
  ##| stop
  sync :beats
  4.times do
    sample :loop_industrial, beat_stretch: 2, amp: 0.2
    sleep 2
  end
end

notes = (scale :gs3, :minor_pentatonic)

live_loop :background do
  ##| stop
  sync :beats
  use_synth :beep
  32.times do
    play notes.choose, release: 0.125, amp: 0.3, cutoff: 70
    sleep 0.25
  end
end