Guns N' Roses, often abbreviated as GNR, is an American hard rock band from Los Angeles, California, formed in 1985. When they signed to Geffen Records in 1986, the band comprised vocalist Axl Rose, lead guitarist Slash, rhythm guitarist Izzy Stradlin, bassist Duff McKagan, and drummer Steven Adler. The current lineup consists of Rose, Slash, McKagan, keyboardist Dizzy Reed, guitarist Richard Fortus, drummer Frank Ferrer and keyboardist Melissa Reese. Guns N' Roses' debut album, Appetite for Destruction (1987), reached number one on the Billboard 200 a year after its release, on the strength of "Sweet Child o' Mine", the band's only single to reach number one on the Billboard Hot 100. The album has sold approximately 30 million copies worldwide, including 18 million units in the United States, making it the country's bestselling debut album and eleventh-bestselling album.