Daniil Simkin, one of American Ballet Theater's most pyrotechnic stars, has been staying busy in the off-season. For this high-profile side project, he commissioned four contemporary ballet works by Gregory Dolbashian, Alexander Ekman, Jorma Elo and Annabelle Lopez Ochoa. At the program's Jacob's Pillow premiere last summer, the best part was the cast, which includes seven of Mr. Simkin's Ballet Theater peers and Celine Cassone of Les Ballets Jazz de Montreal.