You can’t go wrong with Hair. The latest wildly successful remount, now on national tour, surprised many by winning the Best Revival of a Musical Tony Award away from West Side Story last year. Although the show carries with it notions of what meant Broadway risk back in 1968 (a nearly non-existent book, pop-rock music, hippies bashing the establishment, carefree sexuality, and, of course, notorious nudity), it now seems one of the few can’t-miss musicals. (Just try to do My Fair Lady minus a lady able to top “I Could Have Danced All Night” with a decent high G.) But you’re set when these unabashed beauties of both sexes bare all and burst into song. Diane Paulus directed this go-round, yet the lift and liberation comes from the Ragni/Rado/McDermott score. It veers from sexually subversive (“Sodomy”) to plaintive hurt (“Easy to Be Hard”) to a majestic finale of mournful optimism. When the cast soars into “Let the Sun Shine In,” your heart still pushes right up into your throat. You don’t even need to equate the Iraq War with the original production’s slam against Vietnam. Hair at its most potent is a simple plea to unleash the power of love. All these years later, that feels as necessary and nearly impossible to deny as ever. STEVE WIECKING [Also see Kevin Phinney’s review.]

Sun., Nov. 28, 1 & 6 p.m.; Tue., Nov. 30, 7:30 p.m.; Wed., Dec. 1, 7:30 p.m.; Thu., Dec. 2, 7:30 p.m.; Fri., Dec. 3, 8 p.m.; Sat., Dec. 4, 2 & 8 p.m., 2010