Concerto in D Minor TWV 52:d1 - Clarinet Duet and Piano

This concerto was originally composed for solo alto and tenor chalumeaux with strings. In this flexible Musica Rara edition from 1971 edited by Hermann Dechant, the pull-out solo parts have been trancribed for two B-flat clarinets. The piano score, however, retains the solo chalumeaux lines in their original keys and clefs, with Chalumeau 1 notated in French G Clef  and Chalumeau 2 notated in bass clef.  As such, the piano score could be used as a performance score by chalumeaux soloists.  

See MR1633B for a complete set of instrumental parts for the concerto, including solo clarinet parts, one each of the string parts, and a full score.