There are good dancers. There are great dancers. And then there is Peggy Baker. In solo concert at St. Mark’s Church, Baker moved from the daft nurse of James Kudelka’s This Isn’t the End to demented and transfigured soul of Paul-Andre Fortier’s Non Coupable. Inner Enchantments, created for Baker by Molissa Fenley, is an unbroken line of movement to closely mirroring its score by Philip Glass, but Doug Varone’s Volpe Sisters (performed with Janie Brendel) is a heart-breaking study of dependence and aging. Her own Sanctum, to the live percussion score of Ahmed Hassan, establishes the reverential world of time and space she creates. From the essence of gesture to the unrestrained explosion in space, Baker moves with eloquence and force. It’s like seeing the human body for the first time.