Andrea Feineis uses sound therapy via "singing bowls" as she performs constellation work that connects Chuck Spezzano to nutjob quack Bert Hellinger. It seems that many of Hellinger's methods and views, particularly the pseudoscience of "Family Constellations" have been absorbed into Psychology of Vision.
http://www.naturheilpraxis-andrea-feineis.de/aktuelles.php
http://skepdic.com/hellinger.html