I never saw your last wall comment. BT is the name of an electronic artist. Most of his body of work is club music, which is not my cup of tea. I have him up there though because he wrote one of the most perfect albums I've ever heard in my life. It's called "This Binary Universe." The easiest way to describe it would be to call it electronic ambient/instrumental music, but I often think about it as the first true album of 21st century Classical, because each song has that much consumate skill put into it.
Here's a youtube vid of my favorite song from the album: http://www.youtube.com/watch?v=Yt_tjQSdl30
Also, here's the wikipedia page for the album, which offers a good deal of information on how involved and complex the album is: http://en.wikipedia.org/wiki/This_Binary_Universe
Btw, I'm working on a revision of Columbusing. Hopefully I'll post it before the weekend's over.