This viola music for O Holy Night is in the key of G, to play along with other string instruments. Select the image below for a printable PDF of the melody. The O Holy Night String Play-Along page has more versions of this song, so you can play it with violin, cello, and bass. Visit the O Holy Night sheet music page which features the carol in seven different keys. On that page you can find an instrumental range or key that is more suitable for you, as well as print an arrangement that allows you to play along with woodwinds, brass, or recorder.
See the transposition page for explanations and charts to help you determine the appropriate key to play in when performing with instruments that are not in concert key. More Christmas songs for viola.