In 1804 Rossini wrote a set of six String Sonatas, for two violins, cello and double bass, commissioned by Agostino Triossi, a well-to-do landowner, living at Conventello, near Ravenna. These were to be played by Triossi on the double bass, with his cousins playing first violin and cello and Rossini himself taking the rather more demanding second violin part. A further commission from Triossi brought a D major Overture, known to many as Sinfonia al Conventello. The work is scored for pairs of flutes, oboes and clarinets, one bassoon, two horns, one trombone and strings, presumably representing the forces immediate available at Conventello. The slow introduction is followed by a faster section, with a first theme that was later used in the opera Il Signor Bruschino.