Level 4 progresses with the following: extending technique, rhythms and keys through progressive repertoire featuring fun original pieces, classic themes and evocative world tunes. The five progressive books in The Lang Lang Piano Method provide a unique and imaginative way for complete beginners to learn the piano with the world's most successful concert pianist, Lang Lang. There's plenty to play all around the keyboard right from the start. Fun, imaginative pieces develop the left and right hands equally and supporting audio features exclusive performances by Lang Lang of the concert pieces.