Between 1939 and 1942, Donald O'Connor had left Paramount and went back to vaudeville. Then he signed with Universal with his first picture there being What's Cookin'. This was his second and like his previous one, he appeared with another teen named Peggy Ryan. They do a slight pantomime here during an instrumental break in The Andrews Sisters number, "Don't Sit Under the Apple Tree". Also during that song, Shemp Howard gets hit and slapped by at least one of those sisters. He also gets a few from Mary Wickes as his on-off girlfriend. Also appearing here is Huntz Hall-outside of The East Side Kids-who has trouble training Harry James the bugle (This sequence I found a little lame unlike the other ones I just mentioned). There's also some romantic subplot but never mind about that. Just enjoy the music and some of the comedy bits and you should enjoy Private Buckaroo just fine.