22 Studies for Clarinet (22 Etüden) by Iwan Müller edited by Leopold Wlach. Doblinger, 1946, SS, 43 pages. Müller (1786-1854) was a German clarinetist and the developer of the 13 key clarinet in 1812. These studies, in keys to three flats or sharps, are about the same level as Rose. (C0367)