Television Art

Okay, this may seem odd, but I know there has to be someone out there who can give me more info.

Recently I got into television feedback art. I've read and heard about people who have done stuff by using cameras and simply filming the TV, but this isn't what i've been doing. I'm talking about outputting audio from a 4-track or other sound source into both the video and audio inputs on a VCR, then having that run into a TV and display the results.

With most sound the TV displays horizontal bars that grow and get brighter or more numerous or whathaveyou depending on the sounds. Anyways I've played a few noise shows this way by instead of using a reliable sound source, using guitar pickups and microphones, and having the audio that feeds back from the actual television be producing the video, so it ends up as sort of a loop.

I'm just wondering if anyone has heard of people doing this before, or if anyone has any techniques they'd be willing to share! All I've gotten so far has been black-and-white images, so I'm kind of interested in getting some color as well. Tho my knowledge of electronics is severely limited...

hugs
Adam