02.01.2007 THE ART OF WIIJING
The text in the video explains everything you need to know - he tracks different Wiimote movements to different audio editing commands, allowing him to DJ the song in real time by waving around his arms and keeping the beat to the music. There's half a dozen different controls he uses, which vary from karate styled jabs to drum beating motions. I doubt it would be as fun as Guitar Hero, but if it was improved enough, then Nintendo would definitely have a best selling music game in its future. If you want to try it out on your own Wii then you can read DJ Wiij's instructions and techniques here on his site.