Book 4 consists of pivotal intermediate level repertoire that is essential for the student to study, and to apply the knowledge and experience they have mastered from the previous levels. The repertoire at this level will broaden the students understanding of utilizing the fundamentals of proper technique, with accurate musical expression and interpretation in their performances. Mastery of pieces at this level will allow students to refine their abilities and prepare for the advanced repertoire. Features pieces by composers such as: Fran?ois Couperin (The Little Trifle), Johann Wilhelm H?ssler (Capriccio), Robert Schumann (Sicilienne, Opus 68, No. 11), and Aram Khachaturian (Ivan's Song).