Rapper Kendrick Lamar led the Grammy winners on Monday with five wins but was shut out of the night's top categories as Taylor Swift nabbed album of the year in an upset victory.
Compton, California rapper Lamar went into the awards with 11 nominations, and had looked on course to take album of the year for his critically-acclaimed "To Pimp A Butterfly," but it was country-turned-pop artist Swift who won with "1989", the best-selling album of 2014.