Different places shape sound in unusual ways: a cathedral creates rich reverb, in wide open space your voice gets lost, and in an anechoic chamber very strange things happen indeed. This music video was shot in 15 different locations and it reveals how their acoustic characteristics vary so wildly.
The song is performed by Joachim Müllner, AKA the Wikisinger, and the audio tracks don't feature any added reverb. You can hear how the different spaces provide, in the words of director Vincent Rouffiac, "natural reverb, early reflections and short delays." And yes, one of the parts is shot in an anechoic chamber, where there's no sound reflection at all. Take a listen, it's really interesting.