Piano,Viola - Level 3 - Digital Download SKU: A0.725395 Composed by Paul Barker. 20th Century,21st Century,Contemporary,Contest,Festival. Score and part. 14 pages. Paul Barker Music #6668729. Published by Paul Barker Music (A0.725395). Parallel Lines is a dynamic concert work for Viola and Piano inspired by minimalist stylistics which explores parallel motifs and angular themes. Scored to feature both players in the spotlight, this contemporary work is suitable for recitals, concerts and competitions.