My real question is if you truly are a composer and making your own music why are you just storing it on your Mac? Wouldn't you want to have a NAS for that or some sort of other storage option? I would not rely on my Mac for storage of music I thought was very important. Including rare copies of songs or songs I created myself. I would have a different more reliable storage option.

However, that is really shady on Apple's part to make that mandatory, and should be looked into.