Squarepusher is best known for mixing in jazz, funk and blues samples (many times created by Tom Jenkinson, the artist's actual name, as you'll see) within the "typical" IDM sound. Too bad they haven't produced many music videos and the live videos aren't great quality.
The track "Coopers Town" is a perfect example of the Squarepusher sound. Notice how he actually is playing the bass guitar along with the song.
http://www.youtube.com/watch?v=Lq-BPomrsxo
As I mentioned earlier, it's common for IDM fans to produce their own music videos for some tracks. This one is fan-produced for the track "Go Plastic". This track is a little on their more intense side, but nothing too crazy (wait until you hear Venetian Snares).
http://www.youtube.com/watch?v=8RonM2AUS2Y
Another fan video. This one contains some disturbing imagery, but the song itself is quite peaceful. The track is called "I Wish You Could Talk"
http://www.youtube.com/watch?v=LCqz58Fq-Cw
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Remember what I said about Venetian Snares? They definitely are on the more intense and chaotic end of the IDM spectrum.
Venetian Snares music sometimes is too much for me to handle with their noisy samples and crazy snares. Their videos tend to be extremely disturbing as well.
"Find Candace" is probably their most popular track. I want to emphasize again that there is a lot of disturbing imagery here. The video is extremely well produced (youtube kills the quality again) and I love how it syncs with the music. The first 3 minutes are very intense, then there's a calm for a couple minutes with some pretty imagery. Then it returns to mayhem, and IMO, the best part of the video is after that calm.
http://www.youtube.com/watch?v=FiROxYD16Go
"Szamar Madar" is one of their softer tracks. This one is very short, far more peaceful, and doesn't contain any disturbing imagery. Again, the syncing at times is outstanding - my personal favorites are with the raindrops and the lightning bolts, you'll see.
http://www.youtube.com/watch?v=8rjyVF6a4xo
And back on the disturbing and extremely intense side... "Mutant Cunt Sniffer"! The music and video progressively get more and more intense. Listening to the song itself tends to irritate me because of how chaotic and noisy it is, but the video matches it too perfectly and hey, it has lotsa zombies in it! Love the video more than the song here, although this still is a good example of Venetian Snares sound.
http://www.youtube.com/watch?v=TQbH_FOQR1o
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Next installment... back to other forms of experimental music....