Story highlightsBeck upsets Beyonce to claim the Grammy for best album of the yearHis "Morning Phase" was respected but not a commercial smashOn social media, younger people were even wondering: Who is Beck?In Sunday night's biggest surprise, Beck's downbeat "Morning Phase" nabbed the Grammy for album of the year -- eclipsing darling-of-the-moment Sam Smith, who collected four Grammys, and pop queen Beyonce, whose...