This second album mixed live and curated by legendary Grateful Dead recordist Betty Cantor-Jackson is less startling than Vol. One. That may be because we are accustomed to Cantor-Jackson’s spacious mix. It’s also a looser record. Traditionally, the double live album comprises three sides of songs and a colossal jam on Side D. This is Chris Robinson’s joint—the colossus is Side A—a “Vibration Light Suite,” whose light funk unravels into a loose, spacey psych. The triumphant jam vehicle, “Rosalee,” breaks down likewise, and leads into the Dead’s “They Love Each Other,” grounded in Muddy Dutton’s reggae bassline. On an apt verse, drummer George Sluppick kicks it into Nashville territory. Cantor-Jackson separates each player into his own space; we hear each with crystalline clarity. That’s the cognitive stimulus in this style of psychedelic rock. It also illuminates Robinson’s guitar—his tasteful right-hand chop and nastier, more sonic tone—against Neal Casal’s melodic serpentine and Adam MacDougall’s sci-fi synth. Vol. Two is most interesting on the cuts from last year’s Phosphorescent Harvest—the weirdo rock-and-roll “Shore Power” and the brain-fuzzing dirge “Burn Slow”—where the CRB seem to be inventing a new music: a song-based analog psych, in subversion of a digital age.