Twyla Tharp’s Baker’s Dozen, which Hubbard Street first performed here in 1991, evokes a lost paradise of generosity and innocence. Created just after Tharp choreographed the 1979 movie version of Hair (and reportedly including some outtakes from that choreography), it’s glancingly tied to the 1920s, when its music, by pianist Willie “the Lion” Smith, was composed. But the 12 dancers’ tumbling in and out of duets, trios, quartets, and sextets creates a sense of a timeless utopian community: though they switch partners constantly, they never lose their goodwill. As I wrote of the first performance, “Dancers may slide down each other’s backs and legs, may grab each other’s ankles or shoulders; but no one who’s picked up is ever put down other than carefully.” The company’s reviving the work for the first time since 1999, employing a whole new genera-tion of dancers. How they match up with the choreography–which is all about how the dancers fit together–should be part of the fun. Also on the first program are Nacho Duato’s Cor Perdut, Daniel Ezralow’s SF/LB, Susan Marshall’s Kiss, and artistic director Jim Vincent’s Palladio. The first program runs September 26 through 30, the second October 3 through 7. a Harris Theater for Music and Dance, 205 E. Randolph, 312-334-7777, $25-$85. –Laura Molzahn