I got the catalog version and really want to like this game, but the punishing difficulty combined with the way the controls work makes it actually painful to play. The lack of saving within levels is especially infuriating, since I invested a lot of time in level 3 getting to just a few objects left, and then was stuck on a handful of seemingly impossible objects. I felt like I couldn't use my playdate for anything else since I'd lose so much progress, but I couldn't make it any further. Eventually I just gave up and I probably won't come back. Maybe there's something I'm missing about how the instruments work.
Edit: looks like this page has a link to some instructions for the instruments. Maybe that will help.