I don't know how it works here, but normally you'd need a license and a bunch of degrees - both teaching degrees and musical. I mean, you could teach music still, but it wouldn't be an official thing.

[ This is what the young teen says after overhearing those words, sounding rather calm and collected throughout. ]

Hehe, sorry... I didn't mean to interrupt, but you seemed to have a question that seemed to need an answer.