Who choreographed Singin' in the Rain?

Singin' in the Rain is a stage musical with story by Betty Comden and Adolph Green, lyrics by Arthur Freed, and music by Nacio Herb Brown. Adapted from the 1952 movie of the same name, the plot closely adheres to the original. Set in Hollywood in the waning days of the silent screen era, it focuses on romantic lead Don Lockwood, his sidekick Cosmo Brown, aspiring actress Kathy Selden, and Lockwood's leading lady Lina Lamont, whose less-than-dulcet vocal tones make her an unlikely candidate for stardom in talking pictures.

The show had its world premiere in 1983 at the London Palladium, where it ran for more than two years, and has spawned a Broadway production and many stagings worldwide.