NewMusicBox, the throbbing new-music webzine, has achieved a handsome new incarnation, more "bloglike" in design. Check out, among other things, a webcast of the S.E.M. Ensemble’s recent concert at its Willow Place Auditorium, in the rumbling shadow of the Brooklyn Queens Expressway. Alvin Lucier’s The Exploration of the House is a piece in the spirit of the same composer’s experimental masterpiece I Am Sitting In a Room: fragments of Beethoven’s Consecration of the House Overture are played live by the ensemble, recorded on computer, played back, then recorded and played back again in a looping pattern, so that the resonant frequencies of the room gradually transform the original, if you get my drift.