"This Could Be the Start of Something" (generally known as "This Could Be the Start of Something Big") is a popular song by Steve Allen, published in 1956.
Originally, the song was written as part of the score for the 1954 television musical production of The Bachelor. This score earned Allen a Sylvania Award (awarded "For Outstanding Contribution to Creative Television Technique").
In 1956, "This Could be the Start of Something" replaced the original opening theme to Allen's NBC talk show, Tonight Starring Steve Allen, until Allen left the show in 1957 to be replaced by Jack Paar. It became something of a personal theme song for him, being used as the opening to his other talk/variety shows, as well as during the opening of both the CBS and syndicated versions of I've Got a Secret during his reign as host.
A number of performers have covered this song, including Count Basie, Tony Bennett, Bobby Darin, Ella Fitzgerald, Judy Garland, Aretha Franklin, Lionel Hampton, Grant Green, Steve Lawrence and Eydie Gormé, Pia Zadora, and Oscar Peterson.