Schott Die Fröhliche Querflöte Duoheft: 23 pieces arranged for 1 to 2 flutes, accompanying the flute method “Die fröhliche Querflöte 1” (#398469), edited by Gefion Landgraf, easy level of difficulty, ISBN 9783795711894, ISMN 9790001165099, ED 22738, 23 x 30.5 cm, 47 pages / Schott
