These studies are graded for pupils in the grade 2 — 5 range of ability and are written in varying styles ranging from FOLK and CLASSICAL to JAZZ and POP idioms. They are arranged in three sections (see contents above) and make use of the principal keys at each grade, scales and arpeggios in these keys, different kinds of phrasing, articulation, dynamic range, register and notation, leading to more complex patterns at grades 4 — 5.