Instrumental Duet Instrumental Duet,Viola,Violin - Level 3 - Digital Download SKU: A0.512148 By Jose Gonzalez. Arranged by Alison Gillies. Folk. Score and parts. 6 pages. Quartetpad.com #4791537. Published by quartetpad.com (A0.512148). Heartbeats by José Gonzalez, arranged for violin and viola duo by Alison Gillies.