This concerto by Joseph Haydn, composed in 1762, is a delightful work in the classical style.  Its difficulty level is derived from its high tessitura, lip trills, sixteenth-note runs, and cadenzas.  Range is a considerable factor in this work, since the majority of the piece sits in the horn’s high range; therefore, a strong high range and good endurance are necessary for this piece.  The horn part is in D, but transposed F parts are available.  Its charming melodies make the rigorous practice needed to improve one’s agility, technique, and endurance worthwhile.