The Ne(x)tworks collective plays works of Julius Eastman and Lois Vierk at The Kitchen on Friday night, part of a weekend curated by the excellent David Grubbs. The same night, Philip Glass's Satyagraha has its much-anticipated opening at the Met. A cheaper deal ($15) would be Ensemble ACJW at Zankel, under James Conlon's direction, presenting key works of the 1920s: Milhaud's Création du monde, Hindemith's Kammermusik No. 1, Varèse's Octandre. Also running this weekend is the HiFi Music Festival at The Tank, involving such groups as Wet Ink, Ensemble Pamplemousse, Amp, and the Jack Quartet. The Jack's concert, on Sunday Saturday night, will feature the Third String Quartet of Georg Friedrich Haas, one of the most consistently imaginative of Central European composers. Be prepared: the performance takes place in total darkness. Monday night brings a free program of John Cage percussion pieces at the Performing Arts Library: Greg Zuber playing Credo In Us, Water Walk (see video above), and Third Construction. A "secret guest" is promised. Two promising concerts happen next Wednesday: the superb Brentano Quartet completes its Late Style series at Carnegie with Schubert's sacred Quintet in C, while the Talea Ensemble renders works of Claude Vivier and Anthony Cheung, among others, at The Stone. And on Thursday, Daniel Felsenfeld's Bluebeard update The Bloody Chamber plays alongside Jennifer Griffith's The Dressing Room and Dream President at the Zipper Factory; the New Yorker's Russell Platt has more.