<P> "Well, Did You Evah!" is a song written by Cole Porter for his 1939 musical DuBarry Was a Lady, where it was introduced by Betty Grable and Charles Walters . </P> <P> It was later performed by Bing Crosby and Frank Sinatra in the 1956 film High Society, which today is probably the most famous version of the song . </P>

Who sang what a swell party this is