American Popular Piano Repertoire - Level 5 - Book & CD. Each repertoire album contains a wide selection of pieces in three distinct categories: Lyrical; develops beautiful tone, reinforces careful listening Ect, Rhythmic: Instills a steady beat, improves counting, refines articulation, ensures secure syncopations, Ect, Ensemble, hones listening skills, encourages regular ensemble playing, offers rich musical textures even in the early studies; reinforces musical continuity.