Being able to play the right note when there's nothing on your instrument in the way of frets, holes or even strings must take a lot of practice. I sometimes wonder how trombonists stay in tune.
Here's a link with some uncommon versions of common instruments: www.youtube.com/watch?v=v62YjjV-Roo
(, Fri 29 Jul 2022, 4:41, Reply)
but the saw playing is sublime
(, Fri 29 Jul 2022, 6:46, Reply)