I dare you to argue otherwise after listening to this. That’s rock, only with harmonies that most rockers wouldn’t attempt, even though more should.

That piece is the overture from his Kleine Dreigroschenmusik (”Little Threepenny Music”), the chamber suite he wrote from his music from the Threpenny Opera he wrote with Bertolt Brecht. Hearing it made me recall this song (”Song of the Insufficiency of Human Endeavor” in English) from the full … Opera, which is rock, too. Listen to the way it builds from concertina to small ensemble to larger ensemble, harmonies spiralling inevitably outwards.