I figure if anything goes up here, it’s this photo. Tweets are fleeting, blog posts are forever, or some­thing like that.

David Cossin (center) anchors our perfor­mance of Steve Reich’s Four Organs last night at BAM, with Philip Glass, Nico Muhly, Mr. Reich, and yours truly. You can see Nico & me engaging in some subtle conduct­ing. Photo by Stephanie Berger.