3 Bb, Eb Alto, Bb Bass, Bb Contra-Bass, & opt. Eb Contra-Alto Clarinets. In this arrangement of Rossini's popular overture, divisi scoring in the top four parts (3 Bb and Eb alto) means that best performance results will only be achieved when two players per part are used. Rapid lines, sudden dynamic changes, and crisp articulations will require rehearsal, but preparation time will be well rewarded at performances. American Grade 5. Duration ca. 6:00