Messiah, Handel's massive drama of human redemption, was his most famous work, and indeed the most popular oratorio in the history of Western music. After more than 250 years, it has the power to move listeners spiritually and musically. Drawing from both Testaments of the Bible, including the prophecy of Isaiah, the Christmas story, the crucifixion, and the revelation, (which contains the famous Hallelujah chorus), Handel's Messiah has spawned groups of listeners dedicated to its performance. Musically, Messiah ranges from madrigal to aria, with an unvarying...