I’m a doctor. You can certainly become a doctor with a music degree. You can become a doctor with any degree as long as you complete the med school prerequisites.
That said, I’ve never personally known a doctor who was a music major, so my guess is the numbers are very small. BUT, back when I reviewed applications, I would have found it very interesting, and assuming the academic credentials in med school prereqs were outstanding and LORs were good, I would have probably passed the application along to the next level.