Sam | Cas
I... don't see why "fair" has to factor into this equation, honestly. You wish to audition for an orchestra position because playing music in that capacity is something you enjoy. You are good at it. You worked for it. That you are somehow better now due to powers that you did not ask for shouldn't really make a difference.
You aren't auditioning for the fame or money it might bring. Only because it is something you love. No one should ever deny themselves something like that.