Glad you pointed out the implicit nastiness of "get the joke" and "seditious" -- esp. through the Fosse counter-example -- not that I imagine anyone writing such things will actually think twice about it.

My friend Ian has done some work like this -- he would never refer to his work as a "joke" (though he is specifically interested in how to use humor in a modern classical environment and *has* made a lot of jokes in his pieces) -- specifically with No Doubt's "Hella Good." It's called "Real Good," but I can't seem to find anywhere. But to assume that any connection between pop music and classical music is a "joke" is annoying.