If you'd rather learn how to ride a horse or something, I would say do that. That'll keep you out of trouble. You would think a band would get you in trouble, but I think it's the opposite.
This is the evolutionary value of play- play makes us flexible. By reinterpreting reality and begetting novelty, we keep from becoming rigid. Play enables us to rearrange our capacities and our very identity so that they can be used in unforeseen ways.