Oh, I have to promote my friend Noah's human powered electronic instrument, the "Electric Eel". It's no so easy to have sufficient loudness with even with elec

Oh, I have to promote my friend Noah's human powered electronic instrument, the "Electric Eel". It's no so easy to have sufficient loudness with even with electronics: https://www.youtube.com/watch?v=I8MUgwiZULw https://www.youtube.com/watch?v=I8MUgwiZULw It uses re-purposed printer carriage with stepper motor to generate electricity. With very low latency, the pulse of power boots a synthesizer and powers the audio amp.