Fox's television-series-turned-cultural-phenomenon, "24," began airing some 13 years ago and with each tick of the proverbial and practical clock, with each twist, turn and double-turn experienced by Jack Bauer and his covert cohorts was the music of composer SEAN CALLERY. Richard Buxton chats with the composer about the legacy and challenges of "24," and his return to the franchise with 24: LIVE ANOTHER DAY.