The Commodordion

 This article by Linus Akesson (from IEEE Spectrum magazine) is amazing:

https://spectrum.ieee.org/two-commodore-64s-one-accordion

Using the microphone to sense the air flow out of the bellows is clever and making the bellows itself out of floppy disks is a craft miracle.

Here is the video featured in the article:

Now when I think accordian I think Lady of Spain.  And when I think Lady of Spain I think of this scene from Slap Shot:

source: https://www.youtube.com/watch?v=A65QFlXHyBw

Incidentally The Sting (which also featured the Scott Joplin ragtime music that Linus played in the video) and Slapshot were both directed by George Roy Hill and both starred Paul Newman :)

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm