The carefully graded, logical learning sequence assures steady, continual
progress. Original music by the Bastiens includes a stimulating mixture of
pop, folk, classical, and contemporary styles. Full-color illustrations
throughout entertain and reinforce musical concepts along the way.

Level 4 presents the overlapping pedal, 1st and 2nd inversion triads,
sixteenth notes, dotted eigth notes, altered intervals, augmented and
diminished triads, syncopation, parallel major and minor scales, grace notes,
and the keys of G-flat, B-flat, and B.