Instrumental Duet Cello,Instrumental Duet,Viola - Level 4 - Digital Download SKU: A0.915252 By Christina Perri. By Christina Perri and David Hodges. Arranged by K. Speck. Pop. Score and parts. 10 pages. K. Speck #6488725. Published by K. Speck (A0.915252). A Thousand Years by Christina Perri, Viola and Cello Duet. Arranged by K. Speck (@kspeckmusic)Key- B flat major Score- 4 pagesViola- 3 pagesCello- 3 pages.