New instrumental methods are important, and so is well-conceived practice material. Already in Book I (DV 32140), "Von leicht bis virtuos" shows that students can intensify their work with Ewald Koch's "Neue Schule für Klarinette" (New Clarinet Method) through appropriate pieces for clarinet and piano. For his second book, Ewald Koch has put together 16 pieces suitable for home practice as well as public performance. There are original works and competently revised classics. The book harmonizes completely with the second volume of the Koch method (DV 30071), although the pieces can also be played and performed independently of the method. The degree of difficulty of the pieces is delimited by the name of the collection: "Von leicht bis virtuos" ("From Easy to Virtuoso").