The National Edition was based on sources originated from the composer, mainly autographs, copies of autographs and first editions with the composer's corrections, and pupils' copies with Chopin's annotations. In cases when original sources were lacking, the closest possible materials were used.

By Sergei Rachmaninoff Series: Alfred's Classic Editions Category: Piano Collection Format: Book & CD Instrument: Piano Level: Advanced

Studies in Counterpoint, Tonal Organisation & Piano Playing piano composer: Hindemith, Paul Difficulty: advanced Pages: 64

By Claude Debussy Edited by Maurice Hinson Series: Alfred Masterwork Edition Category: Piano Solo Format: Sheet Instrument: Piano Level: Late Intermediate