Tearing through space—backward and in a circle—is how Petronio’s new Locomotor begins. Made up of moves from his 30 years of repertoire, the dance challenges his 10 fierce dancers with devouring space without crashing into each other. Embedded in this elastic group work are some gorgeously tangled duets. Music is by the dee-jay Clams Casino (aka Michael Volpe), who happens to be Petronio’s second cousin. We’ll also be treated to Stripped, a new solo for Stephen himself set to a piano étude by Philip Glass, in a slower tempo and more minor key. A revival of Part I of Strange Attractors (1999) completes the program, which is April 8–13 at the Joyce. To see Stephen talking about this 30th-anniversary concert, go to www.dancemagazine.com and find the just-posted “Choreography in Focus.” For tickets click here.