The progressive rock boom of the late '60s and early '70s produced its own pantheon of superstars -- Keith Emerson and Rick Wakeman at the keyboards, guitarists Robert Fripp and Bill Nelson, and Chris Squire on the bass come to mind. Among the drummers in the field, Carl Palmer stands out as the best known of them all -- he has peers within the genre, to be sure, including Michael Giles, and at least one rival, Bill Bruford, who transcends the field, but Palmer is easily the biggest name, principally by virtue of his work with Emerson, Lake & Palmer, although he's had successe...