Welcome to the Jungle was released in 1987 as the opening track on Guns N' Roses' debut album Appetite for Destruction. Frontman Axl Rose wrote the lyric after a trip to New York, contrasting the city with his Indiana hometown, and the song's delayed echo intro became one of hard rock's most recognisable openings. It grew through radio, MTV, sports arenas and film trailers, and short cuts of the intro now circulate online as a ready-made signal for a wild entrance or high-energy start.