Violinist Rosemary Johnson had spent the past 26 years coming to terms with the reality that she would never make music again. A member of the Welsh National Opera Orchestra, she was destined to become a world-class musician before a car crash in 1988 left her in a coma for seven months.Johnson suffered a devastating head injury, robbing her of speech and movement. She could only pick out a few chords on the piano with her mother Mary's help. But now, thanks to cutting-edge technology, she is creating music again, using just the power of her mind.In a 10-year project led by Plymouth University and the Royal Hospital for Neuro-disability in London, her brain has been wired up to a computer using Brain Computer Music Interfacing software.By focusing on coloured lights on a computer screen she can select notes and phrases to be played, and alter a composition as it is performed by live musicians.The intensity of her mental focus can even change the volume and speed of the piece. It is the first time that Johnson, 50, has been able to create music in decades, and it has been an emotional experience for her as well as the scientists involved in the programme."It was really very moving," said Eduardo Miranda, a composer and director of the Interdisciplinary Centre for Computer Music Research at Plymouth University."The first time we tried with Rosemary we were in tears. We could feel the joy coming from her. It was perfect because she can read music very well and make a very informed choice."The great achievement of this project is that it is possible to perform music without being able to actually move. She is essentially controlling another musician to play it for her."Three other disabled patients at the hospital have also been trained to use the technology and have been working alongside four able-bodied musicians from the Bergersen string quartet.They are The Paramusical Ensemble and they have already recorded a piece of music entitled Activating Memory. ..