Beginning in 1999, "Monster Ballads", a series of compilation albums that feature popular power ballads, usually from the glam metal genre, capitalized on the nostalgia, with the first volume going platinum. The VH1 sponsored Rock Never Stops Tour, beginning in 1998, has seen many glam metal bands take to the stage again, including on the inaugural tour: Warrant, Slaughter, Quiet Riot, FireHouse, and L.A. Guns. Slaughter also took part in the 1999 version with Ted Nugent, Night Ranger, and Quiet Riot. Poison and Cinderella toured together in 2000 and 2002, and in 2005 Cinderella headlined the Rock Never Stops Tour, with support from Ratt, Quiet Riot, and FireHouse. In 2007 the four-day-long Rocklahoma festival held in Oklahoma included glam metal bands Poison, Ratt and Twisted Sister. Warrant and Cinderella co-headlined the festival in 2008. Nostalgia for the genre was evidenced in the production of the glam metal themed musical "Rock of Ages", which ran in Los Angeles in 2006 and in New York in 2008. It was made into a film released in 2012.