Instrumental Duet,Piano Instrumental Duet,Piano,Viola,Violin - Level 2 - Digital Download SKU: A0.627962 By MercyMe. By Bart Millard and Brown Bannister. Arranged by Stephen DeCesare. Christian,Christmas,Contemporary,Praise & Worship,Sacred. 13 pages. Exultet Music #6077785. Published by Exultet Music (A0.627962). The tender Christmas song by the Christian rock band MercyMe, has now been freshly arranged as a duet for Violin and Viola with Piano accompaniment.  Accessible and appropriate for any church or concert setting.  .