Joseph Woelfl Joseph Johann Baptist Woelfl (German spelling:) Joseph Wölfl (24 December 1773 - 21 May 1812) was an Austrian pianist and composer. Op. 29 - Duet for piano & harp in F major The duet is set in 3 movements: 1. Adagio - Allegro (0:00) 2. Andante un poco allegretto (10:03) 3. Finale (17:28) Published in 1804 and dedicated to Madame Cléry. Performers: Laure Colla..