21 Pieces for Viola Players with Piano Accompaniment.

The Boosey & Hawkes Easy String Music series by Katherine & Hugh Colledge contains four volumes of repertoire for new and developing string players. Popular with teachers and students alike, each title steadily introduces and consolidates new techniques, fingerings, notes and rhythms to build firm foundations for future learning.
Each title is available in two editions - one with a CD of demonstration and accompaniment audio tracks, and another with a piano accompaniment booklet plus access to downloadable audio resources.
Fast Forward, the third volume within the series, is a collection of twenty-one pieces that explore 0-12-3-4 and 0-1-2-34 finger patterns. New rhythms and compound time are introduced, along with a wider range of expression marks and some varied bowings.