Tod Machover of MIT's Media Lab is devoted to extending musical expression for everyone -- from virtuosi to amateurs, and in the most diverse forms -- from opera to videogames (Guitar Hero grew out of his group). At TED2008 he talks about what's coming next, from new tools for music creativity to the world's first robotic opera. Machover then introduces Dan Ellsey, a young man with cerebral palsy who has found his voice through music created and performed using Media Lab technologies. Ellsey plays his "My Eagle Song" in a soaring rendition that underscores music's power to heal, to communicate, and to inspire.