Jenna had profound and multiple learning disabilities. She was wheelchair dependent and non-verbal. I was aware that Jenna could not move any part of her body intentionally except for her eyes. Several years earlier Jenna had been learning to play the piano.
I attempted in early sessions to set up the soundbeam to trigger with her eye movements but it soon became apparent that the equipment was not consistently sensitive enough to function in this way. In due course I settled on using the iPad set to an app that responded very sensitively to movements detected utilising the front facing camera. The iPad was placed very close to Jenna's eyes and she was then able to make purposeful eye movements to play various musical notes and other sounds. I found that Jenna would move her eyes in an exaggerated manner for the whole 20 minute session.
On one occasion I set up the iPad to play exclusively percussion instruments and Jenna kept her eyes firmly closed to indicate her disapproval. Most other sounds were acceptable to Jenna. It is highly significant that this set up was the only way in which Jenna was able to express herself musically again, and she always took the opportunity to do so.