<Li> Kathleen Freeman as Phoebe Dinsmore, Lina's diction coach . </Li> <Li> Bobby Watson as diction coach during the "Moses Supposes" number . </Li> <Li> Jimmy Thompson as the singer of "Beautiful Girl". </Li> <Li> Mae Clarke as the hairdresser who puts the finishing touches on Lina Lamont's hairdo . </Li>

Who sings beautiful girl in singin in the rain