Alfred's Basic Piano Library: Lesson Book 4This easy step by step method emphasizes correct playing habits and note reading through interval recognition. Lesson Book 4 concepts include: tarantellas; eighth note triplets; arpeggiated chords; first and second inversion triads in C; triads in all positions; major scales in parallel motion; two part writing; seventh chords and inversions of seventh chords; E harmonic minor scale in contrary motion; primary chords in E minor; sixteenth notes;