Question: Who was a American actress, dancer, and singer, which introduced the song "They all Laughed"?
Sentence (from "They All Laughed (song)"): "They All Laughed" is a song composed by George Gershwin, with lyrics by Ira Gershwin, written for the 1937 film "Shall We Dance" where it was introduced by Ginger Rogers as part of a song and dance routine with Fred Astaire.
Relevant evidence: Yes