Here it is, the crown jewel of the Nonesuch Records at BAM series (and maybe NYC's 2014 contemporary-classical schedule, period). Minimalist giants Philip Glass and Steve Reich share the stage for the first time in more than three decades, presenting a sweeping joint survey, including complete or partial performances of classic works. On Sept 9, Reich and Glass perform the former's notorious early composition Four Organs. (Who's playing the other two parts? Just Nico Muhly and Timo Andres.) Excerpts from Glass's Music in Twelve Parts and the CIVIL warS are set to follow—before the evening closes with Reich's Music for 18 Musicians. Sept 10 brings a reprise of Four Organs, as well as excerpts from Glass's Einstein on the Beach, Koyaanisqatsi, Powaqqatsi, In the Upper Room and The Photographer. Then, to return the favor, Reich joins Glass's ensemble to help play the latter's Music in Similar Motion. (Four Organs will also be presented on this evening, along with Reich's Drumming.) Highlights from the bash-concluding Sept 11 gig include Reich's Sextet and WTC 9/11, as well as excerpts from Glass's Symphony No. 1. Unmissable.