Carol Barratt and Caroline Emery, Traditional Ed: Slatford . DOUBLE BASS TUTOR. By Caroline Emery, Rodney Slatford, Carol Barratt and others. The second volume of Caroline Emerys best selling series for children, adding to and moving on from Book 1 contains 72 short tunes and ensemble pieces, attractively illustrated with musical puzzles and rhythm games. This book contains pieces currently on exam syllabuses: Double Bass AB: 1 - 5 TG: 5 LC: 2, 5 Pieces are approximately Grade: 1 - 5 standard.