Next Tuesday, 31 May, will be a day of difficult choices for fans of New York’s Sonic Youth. London is hosting three separate shows by band members and associates. That evening their mainstay guitarist, Thurston Moore, plays the Union Chapel. SY’s drummer, Steve Shelley, is at The Borderline, guesting with Chicago’s Disappears. And Half Japanese, who both Shelley and Moore have collaborated with, are headlining at The Scala.