Glenn Close, Antonio Banderas, Dame Kiri Te Kanawa, Donny Osmond, Sarah Brightman, Elaine Paige, and Michael Ball are among the stars gathered at London's Royal Albert Hall to pay tribute to the hit-making composer of such international musical blockbusters as "Jesus Christ Superstar," "Joseph and the Amazing Technicolor Dreamcoat," "Evita," "Cats," "The Phantom of the Opera," and "Sunset Boulevard." The many highlights include Banderas reprising his big-screen performance of "Oh What a Circus" from "Evita," Close's thrilling rendition of "As If We Never Said Good-bye" from "Sunset Boulevard," and Te Kanawa's debut of a new song from Lloyd Webber's much anticipated sequel to "Phantom."