Trivia

Final film of Kay Kendall, released posthumously after her untimely death in September 1959 at the age of 33.

The original Broadway production of "Once More, with Feeling!" by Harry Kurnitz opened at the National Theater in New York on October 21, 1958 and ran for 263 performances. It starred Joseph Cotton and Arlene Francis. There was also a London production with John Neville and Dorothy Tutin.

O.E. Hasse was thought suitable for a key role

John Breslin was interviewed for the role of Chester.

Geoffrey Toone and Martin Benson had previously appeared with Yul Brynner in "The King and I" (1956), playing Sir Edward Ramsay and the Kralahome, respectively.