Welcome to the Jungle was released in 1987 as the opening track on Guns N' Roses' debut album Appetite for Destruction, with lead vocals by Axl Rose. It became one of the band's signature songs and a staple at sporting events, in films and in trailers where an unruly setting needs instant energy. Online, the title line has been clipped on its own as a reaction and entrance cue, reused whenever someone steps into disorder, a literal jungle, or a situation that is about to get out of hand.