Purple Rain is the Sixth best-selling soundtrack of all time. Prince worked on other soundtracks, too.

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He was incredibly talented. 1984's Purple Rain was the greatest thing he had ever done. I can't even begin to imagine how hard it might be to follow up on that kind of success.

His next film project was Under The Cherry Moon in 1986. He took over as director, and collaborated on the soundtrack. The film bombed, winning five Golden Raspberry Awards and tied with George Lucas' adaptation of the comic book character Howard the Duck for worst movie. He collaborated on the soundtrack, his eighth album, Parade. That album was a hit, selling two million copies. NME magazine named it album of the year for 1986.

Sign O' The Times was a concert film for his tour the next year. He puts one a great live show, but just wasn't able to carry the film to the top of the box office. The soundtrack - his ninth album, and the first after disbanding The Revolution - was a hit. It had three hit songs on it, the most since Purple Rain.

Three years later, he produced a sequel to Purple Rain. Graffiti Bridge was came out in 1990. It got negative reviews and was nominated for five Golden Raspberry Awards and showed up on a lot or worst of lists that year. Based on 25 reviews on Rotten Tomatoes, it still has a 16% rating. The soundtrack did much better.

He did work on one other soundtrack between Sign O' The Times and Graffiti Bridge that he did not star in. It was for the 1989 Batman film starring Michael Keaton and Jack Nicholson. There are two soundtracks for that film. The one by Prince, and another by composer Danny Elfman. His eleventh album was number one for six weeks and sold eleven million copies.

This happened too.

There's no denying that he was incredibly talented. He was genius. Eccentric, but genius. And he had a unique fashion-sense.

Source: Wikipedia.