We don't depreciate any of our instruments or even bows. The electronic stuff is treated as Expense, and the parts or fixes for acoustic instruments are treated as maintenance and repairs.

I have depreciated a Steinway Grand Piano and a cello for  clients.

I am currently depreciating a kazoo over 7 years.  Instead of paying to have music play when my clients are placed on hold, I just play the kazoo instead.  I have to admit, I’m really getting good at it.  I will also have to admit, I did have a number of clients hang up on me when I first implemented my kazoo system.

It's not specifically named as "listed" property. I would refer you to this article from the Eastman School:

https://iml.esm.rochester.edu/polyphonic-archive/article/depreciation-of-musical-instruments/

Thanks, I ran across this article when I did a google search also. But now do I need to file a 3115? It seems like yes.

@Mike12321 What years are involved? 1040X may be the appropriate cure.