At our school's comedy show in a few days, I'll be playing piano and singing some songs I composed. Oddly enough, I feel like my singing and musical abilities have improved while I've been in med school, even though what I study has nothing to do with the humanities. And I've had a blast collaborating musically with classmates, because we get to work as a team in a context besides learning medicine.
Hopefully I'll be able to hold on to my musical hobbies throughout training. It's something that keeps me tethered to the outside world.