These exciting supplemental products are the perfect complement to the Noona Comprehensive Piano Library. Each book features four-hand piano duets written with equal skills. These collections of appealing pieces are fully correlated with corresponding lesson books, reinforcing strong musical concepts and progressing technique with each delightful duet. Build ensemble playing, enhance recital repertoire, and delight students with these fun-to-play pieces -- each featuring the Noona's creative compositional style.