Critic’s notebook Album of the year candidates are all worthy — finally ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page FREDERIC J. BROWN/Getty Images Justin Timberlake arrived at the Staples Center for the 55th Grammy Awards. FREDERIC J. BROWN Grammy nominees Mumford & Sons arrived on the red carpet. Getty Images Beyonce switched it up wearing a pant suit. Jordan Strauss/Invision/AP Nominee for best pop solo performance, Rihanna. Getty Images Jennifer Lopez strutted on the carpet. Jordan Strauss/Invision/AP Country power couple Faith Hill and Tim McGraw. Mario Anzuoni /Reuters Redfoo, of the band LMFAO, goofed around. Jordan Strauss Ashanti showed off her dress. Chris Pizzello/Invision/AP Jennifer Hudson performed at a pre-Grammy gala.