"It's a Lovely Day Tomorrow" is a song written in 1938 by composer Irving Berlin.
The song came out of a conversation between songwriter Irving Berlin and British / Hungarian film producer Alexander Korda in a New York taxi cab in 1938.
[1][2] It was first performed in London at the start of the war in 1939 before its American release, which caused a sensation at the time.
Berlin used it in his 1940 musical Louisiana Purchase, in which it describes feelings of despair and hope during the American Great Depression, of the 1930s.
[4] In the film version of Louisiana Purchase in 1941, the song was performed by a black chorus.