Twyla Tharp's The Golden Section, first performed in 1981, is the quintessential 80s dance. Its tiny costumes shimmer, its optimism overwhelms. It's even set to music by David Byrne. With its tricks and sly gestures it suggests a fundamental egotism: look at me! But ultimately it works best when its energy comes across as impersonal, its feats seemingly the outgrowth of uncontainable joy. Three of the Ailey company's six programs here include its version--which has never been performed in Chicago before--and the performers are most certainly up to its physical demands. It should be interesting to see how they handle its less tangible challenges. The other Chicago premiere is Existence Without Form by company member Uri Sands, which combines modern, traditional, Indian, and West African styles. On Thursday, March 29, there's a tribute to 25-year Ailey dancer Renee Robinson, who will perform in Ronald K. Brown's Grace, an excerpt from Carmen de Lavallade's Sweet Bitter Love, and Ailey's signature work, Revelations (which closes every performance). See listing for program details. a Opens Wed 3/28, 7:30 PM. Through Sun 4/1: Fri 8 PM, Sat 2 and 8 PM, Sun 3 PM, Auditorium Theatre, 50 E. Congress, 312-902-1500, 312-431-2357 for groups of ten or more, $29-$79.