In my experience Ivy coaches will not let a recruit they want go through admissions unprotected. I don’t think there’s a risk in telling them of other interests and, as you say, music doesn’t carry the near guarantee (to the coach) of a supported recruit who has passed a pre-read.
I’ve known a few recruited athletes who were musicians at the level you mention and Ivy coaches were aware and offers made. A few D1s basically said continuing music wouldn’t be realistic but Ivies did not. But these were track kids so training scheduling was easier for them than, say, hoops. (ETA: as others mention and you probably know, it’d be a lot to juggle as a college athlete but it’s something that can be discussed with the relevant folks. I honestly don’t know how the music path turned out in college for the recruits I knew of In that position)