One Day as a Lion is the eponymous debut EP by One Day as a Lion, the musical duo consisting of Rage Against the Machine frontman Zack de la Rocha on vocals/keyboard and Jon Theodore, formerly of The Mars Volta, on drums. The mixing for the album was done by Mario C. On July 16 the track "Wild International" was made available to stream on the band's MySpace page. It was also premiered by L.A. radio station KROQ as well as Australian radio station Triple J. The EP was released on July 18, 2008 in Australia and July 22, 2008 in the US. The album peaked at #3 on U.S. Top Independent Albums and at #28 on U.S. Billboard 200.