 Their second album, "The Unattractive Revolution", was released on October 3, 2007 and featured two songs co-written by Mars.Mars played guitar on the title track of Hinder's 2008 album "Take It to the Limit", and contributed a guitar solo to the song "Into the Light" by Papa Roach, on their 2009 album "Metamorphosis".Mars also contributed a guitar solo to the song "The Question" on runner-up Dilana's U.S. debut album "Inside Out".