We are developing a multimodal interface for hand rehabilitation following stroke. EMG forearm sensors read attempted finger presses in disordered limbs, and serve as an input to an expressive feedback interface. Auditory, visual, and tactile cues are presented to support rehabilitation of the representation of finger movements across sensory domains. The multisensory feedback is embedded in a rich task, situated between piano learning and expressive music performance. A user of this system will rehabilitate finger movement while developing an expressive music performance. Imagine a complete shift in the form and function of rehabilitation, towards something empowering, where individuals strive in tandem with tailored interfaces, mapped to push them forward at each step, and as part of fundamentally enriching expressive tasks. Our rehabilitative health care environments can sculpt our minds, while changing our lives, if we invent the right tools.