Deborah Kerr does not sing her own songs in the 1956 film The King and I ; her singing was dubbed by soprano Marni Nixon.

What happened in the film

  • In the 1956 movie credits and song breakdowns, numbers like “Getting to Know You” and “Shall We Dance?” are listed as sung on screen by Deborah Kerr’s character Anna, but vocally performed by Marni Nixon.
  • Marni Nixon recorded the singing tracks while Kerr acted and lip-synced to the playback during filming, which was a common practice for non-singing stars in classic Hollywood musicals.

Marni Nixon’s role

  • Marni Nixon became famous as a “ghost singer,” providing uncredited (at the time) vocals for several major stars, including Deborah Kerr in The King and I and later in An Affair to Remember.
  • Kerr departed from usual studio secrecy by openly acknowledging Nixon’s contribution, helping bring public attention to the singer behind Anna’s voice.

So, did Kerr sing at all?

  • For the released film soundtrack, all principal solo and main duet vocals for Anna are Nixon’s, not Kerr’s.
  • Kerr reportedly worked closely with Nixon on phrasing and characterization so the voice would feel consistent with her performance, but the actual singing the audience hears is Nixon’s.

Bottom line: In The King and I (1956), Deborah Kerr acts and lip-syncs; Marni Nixon is the one who truly sings.