This may sound familiar

use_bpm 80

use_synth :bass_foundation
with_fx :reverb, damp: 0.9 do
[hz_to_midi(131), hz_to_midi(130), hz_to_midi(152), hz_to_midi(134),
hz_to_midi(131), hz_to_midi(131), hz_to_midi(135), hz_to_midi(166)].each do |note|
play note, cutoff: 85
sleep 1
end
end