Are there solos for the alto horn?
While the alto horn was most popular as a part of brass bands and similar groups, you can play solos on it. The composer Paul Hindemith wrote a sonata for every instrument, and the alto horn was no exception. Composers Phillip Sparke and Derek Bourgeois have each written multiple solos for the alto horn to play with piano or brass band. While they both used the term "tenor horn," you can play them on the alto.