An alto horn looks similar to a baritone or a euphonium but is smaller in size and presented in the key of Eb.
["The french horn is considered to have the widest tonal range of all the brass instruments; blending well with many other musical instruments, the french horn has a rich timbre is somewhere between brass and woodwind."]
["French horns can be traced back to hunting horns of 16th century France and Germany. \n\nConsequently, to this day, the french horn has strong hunting and military connections and is therefore often used in orchestral and film music. \n"]