Guitar Hero

Here's a great video of a guy playing 100 classic guitar riffs in one take. I'm not sure all these riffs are classics, but the video is worth seeing.

What do you find more impressive: this guy's effortless command of the instrument, or his awesome cognitive agility in making 99 mental transitions, from one key and rhythm to the next, without missing a beat?

http://www.chicagomusicexchange.com/100riffs/