Windows Error Sounds have a New Gig

Really create thinking here. Turning something so annoying into something pleasant and artistic.
I placed 4 videos on here to show case this interesting Windows music that had me in awe. Tell me what you think via a post, email, Twitter, and Digg. w7rdotblogspot@gmail.com *These are not my songs. I found and organized them on my blog for your own convenience and entertainment.

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Which one was your favorite? w7rdotblogspot@gmail.com