The term Swiss musical instrument is referring to the Alpenhorn, a nine-letter word. The Alpenhorn is a traditional Swiss instrument made from an alpine horn, which is a long wooden horn of conical bore used by mountain dwellers in the Alps. It is usually made from wood and is played by blowing into a mouthpiece at one end while the other end is held up to the ear. The sound produced is similar to that of a trumpet or trombone. The Alpenhorn is often used in traditional Swiss music and is also popular in folk music.