https://www.multisim.com/content/tmnN4xMGUUnWkyrBQNTmqJ/monostable-multivibrator-aidan-singh/open/
I found that an astable multivibrator is used in tremolo pedal effects, and often controls the lightbulb within the circuit.
Aidan Singh
Analog Lab Week 12
Aidan Singh's Electronics updates 