John Boles Vocalist ('Song of the Dawn' / 'It Happened in Monterey') Laura La Plante Editor ('Ladies of the Press') / Stenographer ('In Conference') / Quartet Member, 'Nellie' Jeanette Loff Vocalist ('It Happened in Monterey' / 'Bridal Veil' / 'A Bench in the Park') Bing Crosby Trio Singer (as The Rhythm Boys) Glenn Tryon Executive ('In Conference') / Unmarried Husband William T. Kent General ('All Noisy on the Eastern Front') / Goldfish Owner ('Oh! Forevermore!') / Unmarried Couple's Offspring / Vocal ('Do Things For You') Slim Summerville Automobile Owner ('Springtime') / Rear End of Horse / Charles Carla Laemmle Chorine (as Beth Laemmle) Charles Irwin Himself, Announcer / Soldier ('All Noisy on the Eastern Front') Jack White Walter Brennan Desk Sergeant ('Springtime') / Soldier ('All Noisy on the Eastern Front') / Waiter ('Oh! Forevermore!') / Front End of Horse / Quartet Member ('Nellie') John Arledge First Pianist at Giant Piano ('Rhapsody in Blue') / Quartet Member ('Nellie') (as Johnson Arledge) Nell O'Day Dancer Marcia Mae Jones Child ('Bridal Veil') (uncredited) Bela Lugosi Emcee - Hungarian Version Joan Marsh Blonde ("A Bench in the Park") (uncredited)