"Crazy" is a song written and produced by the Americans songwriters and music producers John V. Anderson, Steve Williams and Steve Horton. The song was recorded in 1983 by popular American R&B vocal group The Manhattans and released the same year on the album Forever by Your Side by Columbia Records. "Crazy" was released as a single in June 1983, reaching No. 4 on the R&B chart, and No. 72 on the Billboard Hot 100. Besides the United States, "Crazy" peaked at No. 63 on the UK Singles chart. Two formats were released for the single of "Crazy". The first was 7" single, where "Crazy" was only 3:55 in length and containing the song "Love Is Gonna Find You" on B-side. The second was 12" single, containing the instrumental version of "Crazy" on B-side.

"Crazy" was followed later in 1983 by a second single, the title track "Forever by Your Side", which was successful in Brazil in 1985.

"Crazy" has an official music video, recorded by The Manhattans in 1983. The video shows New York City and its buildings at night, with lots of lights on illuminating the city. The Manhattans sing "Crazy" in a club, wearing white suits and black pants, making gestures and dancing to the choreography of the song. The video also shows images of couples and at a later time, four women appear dancing on the stage where the Manhattans sing.

The B-side of the 7" single contains the song "Love Is Gonna Find You", which was also recorded by The Manhattans in 1983 for the album Forever by Your Side. It was written by the songwriters and musicians Leo Graham and Paul Richmond, and produced by Leo Graham. It was a simple song from their album that was not released as a single.

...
Wikipedia