Most of the 28 studies written by distinguished pianist-teachers (Gurlitt, Le Couppey, Türk, Beyer, Streabbog, Czerny) are two pages long. The selections reinforce technical concepts, but they are not simply exercises; they are delightful pieces that can be programmed for recital or performance. Unit 1 focuses on trills; Unit 2 on crosses; Unit 3 on double notes; Unit 4 on blocked and broken chords; and Unit 5 on waltz bass.