The American guitar virtuoso Jason Becker was once a member of the progressive speed metal band Cacophony. In 1988 he released his first album as a solo artist. While touring with David Lee Roth he was diagnosed with Lou Gehrig's disease (more commonly known as ALS - Amyotrophic Lateral Sclerosis). He did nevertheless continue to compose music using a scanner to read and his eyes to communicate with others.

Source : tartareandesire.com