What are some suggestions for audition songs for an alto?

I'm auditioning for my high school Glee club in 2 weeks. I need two contrasting pieces of pop literature and jazz standards. I am an alto that can hit some pretty manly low stuff but I can also do some highish second soprano stuff. I have a very light toned voice like Alison Krauss but I can also be powerful like Leona Lewis in "Bleeding Love". I want to do a jazz and a pop song... No broadway please. Any suggestions?