Is it a good idea to play an instrument while studying? If so, what are the benefits?
Multitasking research suggests that people can't really multitask. I don't have any evidence to back this up, but I suspect that it's much better for your instrument skills than your studying. The accordion detracts from your focus and attention while you work, perhaps even if it doesn't feel like it. At the same time, though, that exercise may improve your ability to, say, sing and play at the same time.