Ariana Grande, Pharrell headline Grammy Christmas special

Night time broadcast of "A Very Grammy Christmas" includes performances from pop's biggest names and the announcement of nominees for Grammy's Album of the Year. Rollo Ross reports. Credit to Reuters. FOR USE OF CLIPS FROM "A VERY GRAMMY CHRISTMAS, MUST COURTESY THE RECORDING ACADEMY/CBS / MAY USE UP TO TWO MINUTES OF MATERIAL BUT NO MORE THAN TEN (:10) SECONDS OF PERFORMANCE PER CLIP / MAY NOT USE PAST 0700GMT ON MONDAY, DECEMBER 8, 2014 / NO WIRELESS OR LIBRARY ACCESS AND NO RESALE/