Viola Solo - Level 4 - Digital Download SKU: A0.580648 Composed by David Warin Solomons. 20th Century,Contemporary. Individual part. 2 pages. David Warin Solomons #5770423. Published by David Warin Solomons (A0.580648). These variations involve fairly complex techniques including left hand pizzicato, double stopping, harmonics and 3 and 4 part chords.