I can’t go, but you can: tonight at 7:30, head over to Smith Hall at Harvard Hillel and you can hear Daniel Barenboim chatting with Michael Steinberg. (Barenboim is in town for the world premiere of Elliott Carter’s Interventions.) The conductor/pianist/Olympic-class troublemaker is also promoting his new memoir, Music Quickens Time (at least that’s the American title, anyway). I’ve heard Barenboim in such conversations a couple of times, and you always end up with your head expanded. The event is free—no tickets required.