Forming in 2002, Trial Kennedy's first release was an independent EP, "Present for a Day" in 2004.

The band has toured with popular international bands such as Fall Out Boy and Yellowcard. They played legs on the 2007 and 2008 Soundwave festivals, as well as the 2008 Come Together Music Festival. The band supported [a=Birds of Tokyo] in the Wild Eyed Boy tour in March 2009.

Trial Kennedy released their debut studio album, "New Manic Art", on 31 May 2008.

On April 16, 2012, the band announced via Facebook that "For a number of reasons all of us in the band have chosen to close down the project that is Trial Kennedy."