This man helped compose a Fascinating Rhythm standard for the musical Lady Be Good!. In another of his works, he uses a "clave" ("CLAH-vay") rhythm to keep time while other players make heavy use of rubato throughout the piece. This man depicted the citizens of Catfish Row placing money in Serena's saucer after her husband, Robbins, is stabbed with a cotton hook by Crown. 
This man helped compose a Fascinating Rhythm standard for the musical Lady Be Good!. In another of his works, he uses a "clave" ("CLAH-vay") rhythm to keep time while other players make heavy use of rubato throughout the piece. This man depicted the citizens of Catfish Row placing money in Serena's saucer after her husband, Robbins, is stabbed with a cotton hook by Crown. In his travels to Europe, he studied with Nadia Boulanger before producing his work An American in Paris. A 17-note clarinet glissando opens his "Experiment in Modern Music". For 10 points, name this composer of Porgy and Bess and Rhapsody in Blue.
This man helped compose a Fascinating Rhythm standard for the musical Lady
{G}eorge {Gershwin} [or {J}acob {Gershvin}; accept {I}ra {Gershwin} during first sentence; prompt on partial]