Petty or Not'A Live Tribute to Tom Petty featuring Members of Polecat, Baby Cakes, Acorn Project and More'Petty or Not is a tribute band to Tom Petty that formed in the wake of the legend's passing and consists of members of Baby Cakes, Polecat, Acorn Project, and more. All of the musicians had played together in some facet and decided to do a one-off show to commemorate Tom Petty's life and music after he passed away.