Book 3 deals primarily with extended positions of the right hand, the introduction of the A minor and D minor keys and the development of technical skills such as the crossing under of the thumb. Triplets are introduced as well as 'fingered' A minor and D minor chords and much more.
This method uses the great capabilities of the electronic keyboard to teach keyboard musicianship. Book 1 teaches 2nds, 3rds, 4ths and 5ths in C and G positions; 4/4 and 3/4 time signatures; whole, half, and quarter notes; rests; basic note reading; musical terms; 'single-fingered' chords and 'fingered' G and D7 chords.