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This guy is basically a less random Disc O who can play nearly any instrument.
even the "he likes any kind of music, really" part is nearly the same 10/10
On another note, clarifying the extent of his powers by adding descriptions next to them will definitely help. And as a personal tidbit, I'd like to ask why he would get hurt for being a romantic
especially in this school filled with romantics huehuehue. Clarifications by adding more detail to the Background will also help us know more about the character.
As some personal opinions, however, I feel like you could make him less perfect by either toning down what he likes or changing his personality a bit. It's not a bad character, but he's basically an awesome guy with
unexplained magic sound powers affected by minor flaws that's perfectly reasonable. A small twist would be my recommendation, though you do not necessarily have to follow my advice.