Concerto No. 2 in E-flat Major, K. 417, is a standard professional work that is often required at orchestral and university auditions as well as competitions.  The piece was originally written for the performer Joseph Leutgeb (1732-1811) and was intended for natural horn.  Although this concerto is a standard professional work, it is playable by an advanced high school student.  The difficulty in this piece lies in the nuance of performing in the classical style.  Additional technical difficulties include cadential lip trills and sixteenth-note runs to high B^b (B^b5).