String Ensemble,String Trio Viola,Violin - Level 5 - Digital Download SKU: A0.852107 By Paul McCartney. By Paul McCartney. Arranged by Caroline McCaskey. Pop,Rock. Score and parts. 8 pages. AltStrings #2859129. Published by AltStrings (A0.852107). This arrangement is best suited for advanced ensembles, due to shifting and complex rhythms.