“For Opal” arrives at the Knitting Factory as a live rock/pop set built around a rotating bill: Afternoon Bike Ride, Peaer, Wendy Eisenberg, Kissy Noises, Premium Chunk, and friends. The program moves like a small survey of New York’s current guitar-based underground, where pop structure and noise texture often share the same room. No specific NYC premiere history has been announced, but the venue’s long role as a testing ground for independent music gives the night local weight. One clear takeaway is the emphasis on collaboration over spotlight.