These booklets are so useful for promoting accurate intonation, left hand frame-work, security in the first three positions and a well projected tone.  The keys presented are up to four sharps and three flats and  provide  a solid diatonic foundation for the  developing player.  These keys have also  been chosen so that tuning can be related to  the tonal anchor of one or more open strings. Studied in conjunction with etudes and pieces, they provide the teacher and student with a powerful way to achieve  great tonal beauty. Grade 1.5 - 3.