Of all the great prog-era dinosaurs still roaming the earth, Robert Fripp's 46-year-old art-rock institution has remained the most committed to reinvention. Every time the group reemerges—e.g., in its fierce, angular early-’70s incarnation, or its sleekly modernized early-’80s one—it's typically a butterfly-from-a-cocoon situation. Though there's no fresh material in the works this time around, the band is integrating material from every period of its storied career for the first time live. Not to mention the debut of a three-drummer octet lineup is news in and of itself. All hail.