Double pipes with an air chamber, image from the Museum of Ancient, Byzantine, and Postbyzantine Musical Instruments, Thessaloniki, Central Macedonia, Greece
Prof. Vlasis Vlasidis
CC BY-SA 3.0
<a rel="nofollow" class="external text" href="http://www.macedonian-heritage.gr/Museums/Archaeological_and_Byzantine/Arxaiwv_Mousikvn_Organvn.html">Museum of Ancient, Byzantine, and Postbyzantine Musical Instruments at Thessaloniki</a>