Grand Duo Concertant (Weber)

The Grand Duo Concertant, Opus 48, J204, is a three-movement work for clarinet and piano composed by Carl Maria von Weber from 1815 to 1816.

[1] Weber most likely composed the work for himself (on piano) and his friend Heinrich Baermann, a leading clarinettist of the era, although it has also been suggested that the intended clarinettist was Johann Simon Hermstedt.

[4] During its composition, Weber designated the work as a sonata, but abandoned that title upon its completion.

The British music critic John Warrack suggests the work could be referred to as a "double concerto without orchestra", reflecting the highly virtuosic roles for both performers.

[7] The autograph manuscript of the work is preserved in the Library of Congress.