The ISB pioneered "world music" on '60s albums like The Hangman's Beautiful Daughter--Paul McCartney's favorite album of 1967!--experimented with theater, film, and lifestyle; and inspired Led Zeppelin. Be Glad features interviews with all the ISB key players, as well as a wealth of background information, reminiscence, critical evaluations, and arcane trivia, this is a book that will delight any reader with more than a passing interest in the ISB.