"That's All There Is to That" is a song written by Clyde Otis and Kelly Owens and performed by Nat King Cole featuring The Four Knights. It reached #15 on the U.S. R&B chart and #16 on the U.S. pop chart in 1956. The song reference's Ethel Barrymore's phrase to rebuff curtain calls, "That's all there is, there isn't any more".
The single's B-side, "My Dream Sonata" reached #59 on the U.S. pop chart in 1956.
Other versions
Dinah Shore released a version of the song as the B-side to her 1955 single "Stolen Love". Dinah Washington released a version of the song on her 1959 album What a Diff'rence a Day Makes! Etta Jones released a version of the song as a single in 1962, but it did not chart. Hank Thompson and His Brazos Valley Boys released a version of the song on their 1965 album Breakin' in Another Heart.