Instrumental Duet,Piano Instrumental Duet,Piano,Viola,Violin - Level 2 - Digital Download SKU: A0.623237 By Cat Stevens. By Cat Stevens. Arranged by Stephen DeCesare. Rock. Score and parts. 11 pages. Exultet Music #4301135. Published by Exultet Music (A0.623237). The popular and well-known Christian hymn that was made popular by English pop musician Cat Stevens, has now been freshly arranged as a duet for Violin and Viola with an upbeat, energetic Piano accompaniment.  Accessible and appropriate for any church or concert setting and can be utilized for anytime throughout the year.