You Were Never Lovelier (1942), 8

In Buenos Aires, a man who has decreed that his daughters must marry in order of age allows an American dancer to perform at his club under the condition that he play suitor to his second-oldest daughter.
1h 37min | Comedy, Musical, Romance | 19 November 1942
Director: William A. Seiter
Stars: Fred Astaire, Rita Hayworth, Adolphe Menjou, Xavier Cougat.
Val Raset ... dance director
Fred Astaire ... choreographer (uncredited)
Nicanor Molinare ... choreographer (uncredited)

http://www.imdb.com/title/tt0035583/

In the Tap! Appendix for FA, RH.

This is set in Argentina, and is a remake of a '41 Argentinian non-musical film.

Musical scenes:

• 3. Chiu Chiu, Cugat band & singers
• 5. Dearly Beloved, FA sings at wedding
• 10. Dearly Beloved, RH sings in her room
• 12. Audition dance, FA dances in AM's office
• 18. I'm Old Fashioned, RH sings to FA in the garden, then they dance
• 19. The Shorty George, FA rehearses song/dance to RH, she joins both
• 21. Ding Dong Dell, Cugat band & singer
• 23. You Were Never Lovelier, FA sings to RH in garden
• 26. These Orchids, bellboys sing on delivery
• 28. You Were Never Lovelier reprise, FA & RH dance again in the garden

The plot is not too convoluted. Amazing that it is again based on the elder daughter must marry before the younger ones. That makes at least 3 this year, just among musicals: Iceland (Fox), Seven Sweethearts (MGM) and this.

Previously rated 7, but the pleasure of their dancing, and his solos, is too great.

Columbia, dir. Seiter; 8