String Power 1, Viola by Sally O'reilly. Orchestra. For viola. Orchestra method/study. String Power. Elementary. Method book. Published by Neil A. Kjos Music Company (KJ.WS1VA).
String Power features short exercises that help solve many of the technical problems confronting intermediate players. The technical exercises focus on strengthening the left hand using the neglected fourth finger, hearing high/low contrasts, developing flexibility and independence of finger placement, and more!