Christian Bollmann has been played on NTS shows including Play It As It Lathes w/ Zach Cowie, with Invocationes first played on 3 November 2017.

Christian Bollmann is a musician, composer, multiinstrumentalist, overtonesinger, soundhealer, initiator of the peace-pool-project and teacher of music. He studied music education, jazz, and contemporary music in Cologne and holds his degree in musical education and composition. He has collaborated with Jon Cage, Karlheinz Stockhausen, Mauricio Kagel, Michael Vetter, Roberto Laneri, David Hykes, Keith Tippet, groups as BOURY, PADLT NOIDLT, JAZZHOUSE BIGBAND COLOGNE, and others. He works as solist, in duo and trio with various partners as Michael Reimann, Ufo Walter, Günter Müller, Chris Amrhein, Bernd Michael Sommer, Markus Stockhausen, Stefan Heidtmann, Willi Grimm (Switzerland), Aruna Sayeeram (India), Daniel Namkhai (Brasil), and is founder and director of the Overtone Choir of Düsseldorf. Since 1969 he has been involved with european overtone singing and works as a free-lance musician, composer, director, inventor (Bodyboxes, Aquaphone) and producer on various projects, exploring the healing power of sound. He has published 20 CDs with his own compositions yet and teaches worldwide.