• 

  Die Sackpfeife in Deutschland

  http://www.desy.de/~stoye/fg/sackpfeifen/deutschsack/dudel1.htm

  An illustrated guide to german bagpipes from mediaeval times to now, part 1

• 

  Ancient Greek Music and Musical Instruments (1/2)

  https://web.archive.org/web/20110409041105/http://www.mlahanas.de/Greeks/Music.htm

  Keine Beschreibung vorhanden.

---

---