Robert Trory . Book Five - is a selection of essential studies that introduces playing in higher positions, tone production, more advanced string crossing, ricochet bowing, up bow staccato, and develops general facility. (This book completes the requirements for Grades Seven and covers the requirements for Grade Eight. It then leads on to the further study of the standard works of Kreutzer, Rode, Dont, Gavines and Alard amongst others, and to the contemporary work of Simon Fischer.). Grade: 7 - 8