Need an Audition Song for Sweeney Todd?

I am auditioning for Sweeney Todd in a few weeks, and I am not sure what song to sing. I am hoping for the part of Sweeney Todd, Toby, or Judge Turpin (although I would prefer Sweeney). The audition piece has to be in the style of the musical, one minute long. Are there any good suggestions? My range is from D2-F4 (maybe F#4).