I saw the Beastie Boys open for Treble Funk opening for The Red Hot Chili Peppers at Lincoln Hall at the University of Chicago. Must have been late 80's early 90's This was before the Beastie Boys had become popular. They came out doing their thing and the audience basically went, "what the hell is this," and started booing. I was bummed because I thought they were putting on a cool show, but the audience didn't get it. They left after a few songs.