A Day at the Races is the Marx Brothers at their commercial and popular peak, working with a top Hollywood director (Sam Wood of The Pride of the Yankees), supported with a healthy screen budget paying for such extras as a blue-tinted ballet sequence, love songs from crooner Allan Jones, and decorative sets. But the brothers are also at the top of their game in terms of their own comic material and timing. The story finds Groucho, Chico, and Harpo helping out at a sanatorium, where their longtime foil in the movies, Margaret Dumont, is the leading patient. The film has some of the trio’s funniest and most memorable bits and a dazzling horserace at the climax. Not quite as good as its predecessor, A Night at the Opera, this is still a highlight in the Marxian filmography.