What song should I audition with?

I'm trying out for the play, Batboy at my school. My teacher suggested choosing contemporary Broadway songs but I don't know any. I haven't seen much Broadway shows, except for of course, the Disney ones, Phantom of the Opera, Jersey Boys, Hairspray, Mamma Mia, and Legally Blonde. Are there any songs from those shows I should consider auditioning with? Also, I'm not exactly the strongest singer, and I especially cannot reach very high notes/my falsetto voice is very weak. Any suggestions?