M�bachius.

I don't think anyone claimed it was particularly difficult did they?

And I'm pretty sure it doesn't take years of music theory to play notes backwards, especially on a computer... Or two play two tracks and super-impose them. Or... anything.

It's something that is not very technically difficult, but that maybe wouldn't occur to most people to try.

For me, the interesting thing is that all subsequent renditions sounded a lot better than the original.

Uh-oh I made a typo, the trolls are gonna get me!

Actually the point is that Bach wrote pieces like this specifically so that this kind of thing would work with them, in order to display his mastery of all things music.
+5 for J.S Bach.

a required part of every geek library, right next to books by Neil Gaiman and Asimov's Foundation trilogy

Huh. I thought it was "G�del, Escher, Bach". but what do I know.

@Teener

It can be either way. Just like how the eszett (ß) can be written as "ss", vowels with umlauts can be written with standard characters if it's not possible to incorporate them or the writer is lazy (this is why I did it).

Oh shit.

I just now realized my spelling mistake. lol.

http://en.wikipedia.org/wiki/Timothy_Goebel

Obviously I meant the American figure skater, the artist, and the musician.

I wish I had more stars for you.