This traditional Christmas melody is usually called "The Huron Carol" or "The Indian Christmas Carol" or "'Twas in the Moon of Wintertime". A Jesuit missionary in Canada adapted an old 16th Century French tune into a Christmas Carol, adding words in the local Huron language which he taught to the Indians where he was based. This particular arrangement is shown for French Horn and Piano, but the French Horn can be replaced by a range of alternative musical instruments. Other arrangements of this piece on mfiles are one for solo guitar by Glenn Jarrett and one for solo piano based on the guitar version.
For this arrangement the main instrumental parts are the Horn part (or cor anglais) and the Piano Accompaniment (score). In place of the French Horn, you can substitute any of the following instrumental parts: Main instruments in C (flute, oboe, violin), High instruments in C (piccolo), Bass instruments in C (cello, bassoon, trombone), instruments in B-flat (clarinet, trumpet), Alto Saxophone or Viola.