Publisher Desc.  On 15 March 1811 Carl Maria von Weber (1786-1826) arrived in Munich looking for work.He must have begun his Clarinet Concertino almost at once: it was written for Heinrich Brmann, the clarinettist of the National Theatre, and first performed on 5 April, under the direction of the composer. The Clarinet Concertino consists of a slow introduction in c minor leading into a theme and a set of three variations.