Ritz Roll & Rock| Silk stockings | Fred Astaire

“Ritz Roll & Rock” featuring Fred Astaire was an added number from the original score of the stage adaptation of Silk Stocking

Silk Stockings
Music by Cole Porter
Lyrics by Cole Porter
Book by George S. Kaufman, Leueen MacGrath, Abe Burrows
Choreographed by Eugene Loring and Hermes Pan

Silk Stockings involves special envoy Nina Yaschenko. She is dispatched from the Soviet Unionto rescue three foolish commissars from the pleasures of Paris. Romanced by theatrical agent Steven Canfield, she eventually comes to recognize the virtues of capitalist indulgence. Other characters include Peter Boroff, Russia’s greatest composer, who is being wooed by Janice Dayton. Janice is America’s swimming sweetheart, convinces Peter to write the score for her first non-aquatic picture, a musical adaptation of War and Peace. (synopsis from wikipedia)