A composer known as Otto is best known for a concerto for this instrument premiered (-5[1])by the court musician Preger. Johann Baptist Neruda wrote a concerto most often played on this instrument, (15[2])dedicated to Johann Georg Knechtel. The third movement of a concerto (-5[1])for this instrument opens with the notes [read slowly] “long B-flat, (15[1])short E-flat, long C, short E-flat.” An (15[1])1803 concerto for this (15[1])instrument, composed to mark its composer's entrance into (*) Prince Esterházy's court, closes with a rondo in (-5[1])E major, which (10[3])is (10[1])commonly transposed (10[1])a step down. A keyed version of (10[1])this instrument was played (10[1])by (10[4]-5[2])Anton Weidinger, (10[3])for which Johann Nepomuk Hummel wrote (10[2]-5[1])a concerto. The notes [read slowly] “E-flat, F, G” open an E-flat major concerto for this (10[1])instrument by Joseph (10[1])Haydn. For 10 points, name (10[1])this (10[1]-5[1])high-pitched brass (10[3])instrument (10[12])with three valves. ■END■