From 2004 to 2007, Martin was involved in numerous projects while remaining near home. A more comprehensive collection of his works are available on Eric Martin's Official Site. His projects included singing tracks on albums of different composers/artists, singing for karaoke games, video games, and TV commercials, and joining benefit concerts all year round. Martin wrote and recorded the theme song for the "Pride Fighting Championships", which was a major mixed martial arts organization. The song "The Last Man Standing" debuted New Year's Eve 2006 on pay-per-view to millions of viewers.