He is the pop idol trope that women kill each other to get close to. He's seventeen, so he doesn't have to sound like a girl. He is Italian, but doesn't neccesarily need an accent. I'd like something in between, like around the range of Charlie Puth, for an example of how deep. As for the auditioning verse, you may choose anything you're comfortable with, but if I had to supply an option I would say 'Beauty and a Beat'.