It is hard to resist its infectious songs and its celebratory spirit

THEATER, NOSTALGIA Let the Sunshine In (Briefly) By MELENA RYZIK Friday, September 21, 2007 Donna Alberico for The New York Times

Get off your cynical high horse and head to the Delacorte Theater in Central Park for a free production of “Hair.” It stars Jonathan Groff, of “Spring Awakening,” but other than that, it’s a Flower Power period piece, writes Charles Isherwood. “You can’t pry ‘Hair’ out of the 1960s, give it a new perm and make it speak of things timeless,” he says. On the other hand, “it is hard to resist its infectious songs and its celebratory spirit. All these years later it still sounds pretty groovy.” It runs for three days starting tomorrow, just enough time to pick up a commemorative afro wig, peace button and attitude adjustment before you go.

“The Aging of Aquarius,” by Charles Isherwood READY TO ROLL From left, the actors Jonathan Groff and John Gallagher Jr. and the composer Duncan Sheik.