"It Happened in Sun Valley" was written for the 1941 film "Sun Valley Serenade", featuring Sonja Henie, John Payne and the Glenn Miller Orchestra with the Modernaires. We have recreated the Miller chart for you here, and have scored it for full big band and five piece vocal backing group, though it is singable with only a boy girl duo. The band vocal chorus is written into all of the brass and sax parts. All saxes are called upon to double Clarinet (Bari on Bass Clarinet and Alto). However, the Bari sax part is printed double sided - with and without the Bass Clarinet double. Tex Beneke's solo is written out in full on the Tenor 1 part, and is also cued on Tenor 2. The vocal starts in G, and modulates to C, Ab and G, as per the original. A great chart for Christmas, or for a Miller tribute.