These flutes have two chambers that can be played separately or together. There are two types of Double Drones: Stable and Alternating Drones. Stable drones have one chamber that is a consistent note with a scale on the other chamber. Alternating drones have a hole on one of the chambers allowing it to be two different notes, while the other has the full range scale! *If the product does not say "alternating drone", it is a "stable drone".
Double Drones
Double Drones