"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.
[1] 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.
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