Mickey Hart on Rhythm Devils, sampling the Big Bang and the healing power of music

Mickey Hart (due tomorrow night at the Ogden Theatre) was one of the Grateful Dead's two drummers; along with Bill Kreutzmann, Hart helped weave the unique polyrhythms of the legendary band. Whether as a solo artist, with the Dead or as an activist, Hart always puts his heart and his being into his work, and his active mind has taken him down probably every path that has struck and stirred his imagination.