Context-Intelligent Spam?

I just got three blog comments from spammers using the fake names of “Art Blakey’s Jazz Messengers” and “Mahavishnu Orchestra.” I can’t help but wonder how or why these actual band names, reasonably obscure as they are, managed to get employed in the name of spam. Did they come about at complete random, or are the spam bots aware that I have several Mahavishnu CDs in my collection? I don’t have any Blakey, though. Maybe it’s just a coincidence. Which would be a nice illustration of correlation that does not equal causality…