"A Billion Hits" is a pop song that Ross Lynch as Austin Moon sings in the episode Kangaroos & Chaos, which premiered on December 4, 2011, as an opening act for the kangaroo. On the show, it was written by Ally Dawson in response to Austin's concerns that he might fade from the limelight and the people might think that he is Ralphie Hayes, The Dog Food Guy. This is the first Austin & Ally song to be fully released. In reality, the song was written by Mitch Allan and Jason Evigan.