Audition song? Is "thank you for the music" from mamma mia a good one?

I'm a thirteen year old alto/mezzo and have a camp audition coming up. Is "thank you for the music" from mamma mia a good one? in the beginning of the song it talks about what a good singer she is and i don't want to come across as arrogant. so is this a good song choice? are there any other suggestions? thanks! :)