Peter Aidu, playing Steve Reich's "Piano Phase"

Here is an astonishing bit of artistry from Russian pianist Peter Aidu. Steve Reich is a minimalist who composed a number of pieces using tape loops that were played at slightly different speeds, which resulted in each track weaving in and out of phase with the other(s). The effect is uniquely dissonant and vertiginous. Much the same effect is produced in this piece, which was originally composed for two pianos (and, it goes without saying, two pianists). I'm not aware of anyone else that has played it simultaneously on two pianos. The recording is from www.archive.org. Just in case you don't believe that's one pianist without any special effects, here's a video of another performance of the work, courtesy of http://www.top-40.org/top09/top09.html (I prefer the audio-only version, but it's interesting to see Aidu actually playing. Come to think of it, if you're a really adventurous soul, you could play the audio clip and the video clip at [almost!] the same time and double your phase-shifting pleasure!).