If we believe the multiverse theory to be true, there's probably a universe out there in which you have superpowers.
Imagine that: a reality to the question of, "If you had superpowers, what would they be?"
So why is it so unbelievable that in this universe you can't be successful at your music?
Nobody has the power to tell you that you can't achieve your dreams.
Everybody else is too busy thinking about their own dreams to care about yours.
It's up to you.
Make this universe the one in which you succeed.