Bläser-Schulen-Verlag Gemeinsam lernen & spielen 1 Klarinette Oehler: School for wind instruments and instrumental lessons, by Jaap Kastelein and Michiel Oldenkamp, ??edition for clarinet Oehler (German system), ISMN 9790700382018, BSV 115-003, 23 x 30.5 cm, 72 pages, incl. download code for play-along recordings, in German language