Sonata in E-flat Major (Clarinet in B-flat and Piano). Composed by Felix Bartholdy Mendelssohn (1809-1847). Edited by Ernst Herttrich. For Clarinet, Piano Accompaniment. Henle Music Folios. Softcover. G. Henle #HN1033. Published by G. Henle (HL.51481033).
Mendelssohn likely composed the sonata for Carl Baron von Kaskel, an amateur clarinet player. The intermediate clarinet part might pay tribute to Kaskel's modest ability and therefore is a perfect teaching piece.