This kind of pipe produced twice as much volume as a single pipe, which improved outdoor playing.
A further development was the use of wax to stop the finger holes in one of the pipes which produced an attractive drone accompanying the melody with a constant pitch.
The pipes in ancient Greece were obviously not only a musical instrument for the male players but for female players as well, as they had been in ancient Egypt, evident in numerous pictures and inscriptions.
In the Greek theatre, particularly in the comedies of Aristophanes (c.
An early example of this type are the famous silver pipes in the Royal Cemetery of the ancient Sumerian city of Ur.