Musikverlag Gert Walter Die neue Technikfibel for junge Pianist*innen der Unterstufe der Mittelstufe und der Oberstufe: technique school for piano, by Gert Walter, in three different difficulty levels, ISBN 9783947044139, ISMN 9790502620776, MVGW 180, DIN A4, 64 pages, in German language
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