I remember the good old times, same age, playing in bands. I think I played in bands non-stop between age 13-25. Then it turned into the Jamsessions, which is similar, but doesn't require as much practicing :-D It was a great time. I sometimes go back to videos of gigs we played, and obviously we weren't half as good as I thought - but your nephew's band sounds pretty solid for being that young. I listened on bandcamp, as I'm not in the mood to create yet another account.