Sunday Baroque on NPR.

Is... is this not a good source of modern preferences in classical music?

I completely misunderstood you. I thought you were talking about actual modern music, not modern preferences in Baroque music. (You did say "modern classical".)

For the record, there is an abundance of vocal music from the Baroque period; I don't know how much of it is played on NPR.

Also, I feel that we are arguing in difference ways about complexity. I'm thinking in terms of total possibilities (eg. there are only so many 5 minute pieces expressible with 88 keys or whatever), but you seem to have some sort of entropy measure in mind.

Yes on the latter point. As for the former, I don't understand what you mean. Are you saying something like "there are fewer possible art compositions than rap songs, because art music is limited to 5-minute piano pieces"? That would be absurd, but I can't come up with another meaning.