 Features musical numbers edited from earlier Warner Bros.  Technicolor shorts: "The Blue Danube" from Gypsy Sweetheart  "Drifting on the Rio Grande" from Swingtime in the Movies "Swinging  Through the Kitchen Door" from Swingtime in the Movies "Annie  Laurie" from The Changing of the Guard "Dancing is the Darndest One"  from Ride, Cowboy, Ride "Beyond the Open Road" from Sunday Roundup