Growing up means a lot of responsibility coming your way. Don't be overwhelmed, breath in and breathe out, start dealing with one thing at a time. Make sure you take your time when dealing with dilemmas, it does not hurt to conduct a SWOC or SWOT analysis of the situation, for every mistake or wrong choice you make, it has an equal impact on your life just as when you make a right choice. Be careful with what you wish for as long as your imagination is not limited.
Good news first. Hearing bad news first makes it impossible to enjoy the good news.
Music is changing, not everyone will like the drum forever. Some will love a piano and other instruments hence blend in and be familiar with other things. I would encourage the boy to pursue other things.
Be realistic, is this even possible?
Why not, you can do it.
I don't doubt.