Blur has always been a band that mainstream America just didnt get. Maybe it was vocalist Damon Albarn’s exaggerated accent or the quintessential British characters he likes to write about, but it seemed that Blur’s fate was to play to a small group of Anglophiles who adored them. That should change with their self-titled record, which was released last week. At their sold-out show at the Riviera Theatre Saturday night, the four-man group (supplemented by a keyboardist and a two-man horn section) went top heavy on cuts from Blur, which is the most accessible of their five albums. They gave their fans a deliriously fun 1-hour 40-minute set that had music, style and showmanship.