Berklee Audition for electric guitar

yes, thats right, i will be one of the 1400 guitar players auditioning to get into berklee this year, and i would like to ask some fellow players a question. What would you play for an audition piece? They want you to audition a piece by an establish groups that can show of style and proficiency. I want a good, and simple audition piece, as im a little more concerned about the improv and sight reading portions of the audition, but if anyone has advice, PLEASE SHARE hahaha

Im planning on playing Zoot Allures by Frank Zappa

I'll be using a backing track and will modify the track a little so i can solo over it