Lineup announcements for the fourth annual Jamboree Music Festival in Toledo, Ohio have begun. Bands announce so far: Man Overboard, Hostage Calm, The Story So Far and Cruel Hand on day one and Within The Ruins, I Declare War, Sworn In and Erra on day two. The festival is set to take place at Headliners in Toledo, OH on April 13 and 14, 2013.