"Let's Go Crazy" is a 1984 song by Prince and the Revolution. It was the opening track on both his album and the film Purple Rain. "Let's Go Crazy" is one of Prince's most popular songs, and is almost always a staple for concert performances, often segueing into other hits. When released as a single, the song became Prince's second number-one hit on the Billboard Hot 100, and also topped the two component charts, the Hot R&B/Hip-Hop Songs and Hot Dance Club Play charts, as well as becoming a UK Top 10 hit. The B-side was the lyrically controversial "Erotic City". In the UK, the song was released as a double A-side with "Take Me with U".