Great summary of logistics above. I would recommend one major (no minor or second major) in these other areas (fun stuff) and a more science oriented focus (beyond prereqs) primary major. Maybe a major in biology and minor in music or double major, etc. At least start out this way. Although your plan may be a bit more fun, taking more science classes will test your ability and interest in (at a basic level)pursuing med school. Not really about admissions as you can do that with prereqs and any major you want, but actually seeing if you really want to go to med school (so many change course along the way- which is good if they learn they’re not interested or don’t want to put in the time / effort).
As the poster above says, it’s “doable”, but is it the sensible thing to do? Up to you of course.