I am auditioning for a high school play. I need a song and a monologue. I'm pretty sure that it is Hairspray.?

I don't want directions on how to choose because there are so many to choose from and I found out auditions are tomorrow and the next day. I know. Immature for procrastination, but I promise I've done drama for 4 years, so I can do this. I just need some help and asking my friends is DEFINITELY not an option. I was thinking of singing "I'll go" by Chris Brown. I'm uncertain. As for the monologue, I was going to do a piece from Hamlet... but I found out it was cheesy. Cheese is only good on everything but theatre, apparently. They must be lactose and tolerant... but anyways.. GRACIAS.