I listen to bluegrass and old-time music a lot. Much is from the 1940s through the 1970s.

Now the "classic rock" stations are starting to play grunge. No. Classic rock doesn't even include hair metal. Grunge is out of the question. Rename your station and stop the "classic" creep. No one will ever think a K car is a "classic" in the sense of the muscle cars of the 1960s and 70s, and the music delineation is similar.