LOS ANGELES (Reuters) - Country-pop singer Taylor Swift brought the circus to the Grammy stage on Sunday, kicking off the annual awards with a lively performance and British singer Adele picked up the show's first award. The Black Keys, Skrillex and Gotye started the night strong, each picking up multiple awards prior to the televised ceremony. The 55th Grammy Awards will hand out their gramophone-shaped trophies in more than 80 categories, but only a handful of winners are announced during the three-hour live telecast airing on CBS. ...