"Give My Regards to Broadway" is a song written by George M. Cohan for his musical play Little Johnny Jones which debuted in 1904 in New York.
Cohan, playing the title character, sings this song as his friend is about to sail to America, looking for evidence aboard the ship that will clear his name for allegedly throwing the English Derby. He is sure he'll become a star on Broadway, therefore signing off with: "Give my regards to Broadway."[1]