This is a difficult questions because no matter the au music is usually a very big part of Ridley's life. One of his core personality traits is his belief that he was created to make music. I feel like I'm fundamentally changing who Ridley is as as a character if music isn't one of the most important things in his life.

He is a very creative person, so any sort of creative career is something likely. He enjoys creating visual art so I could see that being a career path. I've considered a few au's where Ridley is an actor. He is very passionate and that translates to him working very hard in the things he cares about and creative pursuits are the easiest way for him to use his passion.