Plymouth University’s Interdisciplinary Centre for Computer Music Research (ICCMR) has been working on pioneering brain-computer music interfacing, BCMI for short (or as the ICCMR director of research Professor Eduardo Miranda sometimes calls it, ‘Music Neurotechnology’), for over a decade.
This work has been used, amongst other things, to give disabled patients access to music making. A 
54-month ICCMR collaboration with Reading University to develop real world implementations of these ideas has just been featured in The Guardian, where colleagues from Reading’s Brain Embodiment Laboratory (under the leadership of Prof Slawomir Nasuto) demonstrated a pilot system to award-winning rapper and music producer Tinie Tempah.
The BCMI MIdAS system on display is still in its infancy, and future iterations currently in development will be exponentialy more sophisticated.
Full details of the collaboration can be seen on cmr.soc.plymouth.ac.uk/bcmi