No Reber Added (An Acoustical Experiment of a Song Recorded in 15 Different Locations)
This guy sings the same song in 15 different places. Hear what happens! No artificial reverb added. The Wikisinger sings the same song in different environments experimenting with natural reverb, early reflections and short delays. One of the scenes is recorded in an anechoic chamber without any sound reflections.
(via This is Colossal)