 The song "Put Me To the Test" was a complete reworking of an  instrumental used in the 1937 Fred Astaire musical "A Damsel in  Distress". The lyrics for it had already been written by Ira  Gershwin, and the original melody by his brother George, but because  the song had already been heard only as an instrumental in that  film, George Gershwins melody was discarded in favor of a new one  by Jerome Kern when "Cover Girl" was made, and Ira Gershwins lyrics  to the song were finally heard.