"At Last" is a 1941 song written by Mack Gordon and Harry Warren for the musical film Sun Valley Serenade (1941), starring Sonja Henie and John Payne. Prior to release, it was performed in the film by Glenn Miller and his orchestra, with vocal by John Payne and Lynn Bari, dubbed by Pat Friday. Studio head Darryl Zanuck reportedly said, “There are too many big ones in this. Let’s save one for the next.” The “At Last” vocal by Payne and Bari was thus deleted, although instrumental versions remained in the film, including in the Black Ice Ballet finale.

“At Last” was added to Glenn Miller’s subsequent and only other film, Orchestra Wives (1942), starring George Montgomery and Ann Rutherford. Vocal was by Ray Eberle and, again, Lynn Bari, dubbed by Pat Friday.

Unreleased recordings of the song had been made in 1941 by Glenn Miller. A new version was recorded by Glenn Miller and His Orchestra in Chicago on May 20, 1942, and released by RCA Victor Records as a 78 single, catalogue number 27934-B, backed with the A side "(I've Got a Gal In) Kalamazoo". The song reached number 9 on the Billboard pop charts in 1942, staying on the charts for nine weeks, and later became a standard.

When RCA Victor issued two 10-inch LP soundtracks to “Sun Valley Serenade” (LPT- 3064) and “Orchestra Wives” (LPT-3065) in 1954, to coincide with the theatrical reissue of the two films, the outtake version of “At Last” from “Sun Valley Serenade” was included, heard for the first time, but the version in “Orchestra Wives” was not. This latter rendition was eventually on LP in 1958, in the 20th-Fox double-disc (TCF-100-2) Glenn Miller “Compilation of His Original Film Soundtracks”

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