That question “apart from music, what business do you do? Like, a proper business?” honestly comes off as a bit insulting. Music is actually one of the biggest industries in the world, and in many cases, it’s just as serious (if not more) than what people like to call “proper businesses”
At the end of the day, investing in a music career is a real business decision. Like any other venture, it has its risks, but it can also be highly rewarding if approached the right way.