This instrument accompanies the aria “Parto, parto, ma tu, ben mio” (15[1])from La Clemenza di Tito. Ravel remarked that he wrote the slow movement of his G major piano concerto while “under the spell” of the Larghetto from a Mozart chamber piece that features this instrument. (15[1])In the Adagio movement of a concerto for this instrument, the soloist enters immediately with the notes [read slowly] “A, long D [pause], F-sharp F-sharp E D.” This instrument joins viola and piano in Mozart’s (*) “Kegelstatt” trio. (10[1])Brahms and Mozart both wrote late quintets (10[1])for this instrument and string quartet, respectively for Richard Mühlfeld (“REE-card MOOL-felt”) and Anton Stadler. It’s not horn, but Mozart’s last instrumental work was an A major concerto for the (10[1])“basset” variant of this instrument, which is pitched in A rather than the usual B-flat. For 10 points, name this single-reed woodwind. ■END■