The Launeddas (triplepipe) is a flute instrument consisting of three separate pipes that are played simultaneosly. Two pipes have 5 fingerholes each (allowing polyphony), while the 3rd pipe serves as drone. Fingerholes might be square-shaped rather than typically round. Air is blown using the circular breathing technique, which is also used playing the Australian Didjeridu (or yirdaki). Continuous flow of air is achieved by breathing in through the nose while simultaneously blowing air out of the mouth. The mechanics is similar to those of a bagpipe, with the musician's mouth cavity being the "bag".
Source:
http://en.wikipedia.org/wiki/
Source:
http://en.wikipedia.org/wiki/
The Launeddas has been known since the 700s BCE, and still played in Sardinia, a large island off the west coast of Italy.