Certainly this is just a sign of me being old, but I don't really think of Nirvana or Pearl Jam as Classic Rock. To me, Classic Rock is more than just old rock songs. It's a specific type of rock music, mostly from the 60s to the 70s, starting around the time of The Beatles and The Rolling Stones, and ending some time in the late 70s. I think there have been some more recent "Classic Rock" bands, like The Black Crowes, that have the same sound and can probably fall into that category. I feel like Nirvana is distinctly Grunge, though, and to me it has a very different sound. I wouldn't consider them to be Classic Rock any more than I would consider Elvis (who is "Oldies"). Beyond that, I've heard bands like REM on "Classic Rock Radio" and they are certainly not classic rock. Do others feel this way, or is this just me being old?