I Know Why (And So Do You)


"I Know Why " is a 1941 song by Glenn Miller and His Orchestra. The song appeared in the 20th Century Fox movie Sun Valley Serenade. The song was also released as an RCA Bluebird 78 single.

Background

The song was written by Mack Gordon, lyrics, and Harry Warren, music. The song is lip-synched by Lynn Bari in the movie Sun Valley Serenade. Pat Friday sang the vocals with John Payne and The Modernaires. The single, RCA Bluebird B-11230-A, reached no. 18 on the Billboard pop singles chart in a one-week chart run. The single release featured vocals by Paula Kelly and The Four Modernaires. The B side of the single was "Chattanooga Choo Choo", which de facto, was treated as the A side.
Covers of the song have been recorded by numerous artists, including The Manhattan Transfer, Mel Torme, Richard Himber And His Orchestra with Johnny Johnston and the Joseph Lilley Ensemble on vocals, Ray Anthony, Anne Shelton with Ambrose & his Orchestra, June Christy, Frankie Sardo on 20th Fox Records, Lionel Hampton, Jean Peters, Joan Regan, Michael Feinstein and George Shearing, Babik Reinhardt, Dick Smothers, the Red Garland Trio, Orchestra Coco, the Michael Rose Orchestra, Teddy Petersen, Falconaires, US Air Force Band of the Rockies, Max Greger, Syd Lawrence, the Dino Olivieri Orchestra with refrain by Bruno Pallesi, David Pell, Diana Panton with Red Schwager on the album Red, and Robert Clary.
The 1941 Glenn Miller recording was featured in the 1990 Warner Bros. movie Memphis Belle and the 2017 film The Shape of Water which was nominated for 13 Academy Awards.

Personnel

The personnel on the 1941 recording by Glenn Miller and his Orchestra released as a 78 single were: Paula Kelly, The Modernaires, Billy May, John Best, Ray Anthony, R.D. McMickle, Glenn Miller, Jim Priddy, Paul Tanner, Frank D'Annolfo, Hal McIntyre, Wilbur Schwartz, Tex Beneke, Al Klink, Ernie Caceres, J.C. McGregor, Jack Lathrop, Trigger Alpert, and Maurice Purtill.

Album Appearances

The song appears on the following albums: