It Happened in Sun Valley
"It Happened in Sun Valley" is a 1941 song composed by Harry Warren, with lyrics by Mack Gordon. It was recorded and featured by Glenn Miller and his orchestra in the movie Sun Valley Serenade.
Background
Glenn Miller and His Orchestra released the song as an RCA Bluebird 78 rpm single, B-11263-A, in 1941 as a tie-in with the movie, which also featured Glenn Miller and his Orchestra in a performance of the song onscreen with the cast. The B side was "The Kiss Polka", also from the Sun Valley Serenade soundtrack.While the song makes no mention of Christmas in its lyrics, the winter theme has caused it to become associated with the holiday. Cover versions have been recorded by such artists as André Previn, Jo Stafford, the Randy Van Horne Singers, and Mel Tormé. The song is performed in character by South Park characters Stan Marsh and Wendy Testaburger as part of the 1999 holiday album "Mr. Hankey's Christmas Classics."