The quena is the traditional flute of the Andes. Traditionally made of cane or wood, it has 6 finger holes and one thumb hole, and is open on both ends or the bottom is half-closed (choked). To produce sound, the player closes the top end of the pipe with the flesh between the chin and lower lip, and blows a stream of air downward, along the axis of the pipe, over an elliptical notch cut into the end. It is normally in the key of G, with G4 being the lowest note. It produces a very "textured" and "dark" timbre because of the length-to-bore ratio of about 16 to 20, which is very unlike the tone of the Western concert flute with a length-to-bore ratio of about 38 to 20.