All Tomorrow's Petty is not a "tribute" band, per se. It is a (part of a) night that you spend with your friends in (or near) a bar or some other celebratory site/occasion. While you're there, you hear a bunch of songs written by Tom Petty and played by homeboys/girls who enjoy playing them together. If you already like Tom Petty's songs, you're happy to hear them rendered in a mostly recognizable fashion. If you are deluded into thinking you don't know or like any Petty songs, you are forced to confront this wrongheaded notion.