27 February 2013, I visited a special concert tonight - by the music people of Jaðarber (http://jadarber.is/). A nice composition by Steve Reich was played, too.
One instrument tonight was the ‘Thranophone #2’ (icelandic “Þránófónn #2”), see the picture - an electro-acoustic musical instrument, which uses positive feedback to amplify the formant-peaks of complex/simple shaped cavities. It’s sonic material and possibilities of pitches derives from the resonance frequencies of cavities - ahhhah. More infos about the concert https://www.facebook.com/events/454241441315738/ and this instrument http://www.thrainnhjalmarsson.info/thranophones (scroll to the right)

On facebook: https://www.facebook.com/photo.php?fbid=10151259747247382&set=a.10150240354367382.319829.39742377381&type=1&theater