When preparing for auditions it’s best to go above and beyond what is already expected. So when you prepare a song or monologue look outside the box and get creative with your choices. There is nothing worse than being compared by the auditors because 12 people sang the same song you did.
It’s best to pick songs or monologues that fit the type of character that you fit. For some, they fit into the “Ingenue” type character, others may fit into the “Noble Hero” character, and so on. Do your research. Ask friends and co-workers what they initially thought when they met you. This will help especially when looking for audition pieces and at shows to audition for.