"A bukkehorn also called \u2033Billy Goat Horn\u2033 in English is an ancient Norwegian musical instrument, made from the horn of a ram or a goat. The billy goats it is made from are usually 5 to 7 years when the horn is taken. It was traditionally used by shepherds and milkmaids on summer dairy farms in the high mountains, as a signal-instrument or as a scaring instrument. When the Bukkehorn later got finger holes it became possible to play melodies with it."@en . . .