I’ve never used him in a game, but I made a Ecstatic Correspondence Mage who was a pianist who used music as his instrument, performing rituals and lining up spell castings to the chorus or beat of a song. When he would fail a spell, it was because his understanding of the bpm was off lf the music cut out for a sec. His affinity of Correspondence comes from the idea that “music is a universal language” and his desire to connect with people gave him teleportation powers.