This is an early instrument which is no longer used. It is a double reed instrument with a cylindrical bore. The reed is held in a capped chamber, not in the mouth, like the chanter of a bagpipes. This means that the crumhorn is not really capable of overblowing into the second register. The crumhorn has a very limited range of one octave and one note. Early crumhorns used finger holes without keys. Some modern replicas have keys to extend the range by a few notes. The most distinctive feature of the crumhorn is its shape: the end of the crumhorn is curved upwards to make a shape like the letter J. This is purely for decorative purposes. The name crumhorn means bent horn.