As predicted last week, Taylor Swift's "Red" album remains at No. 1 on the Billboard 200 for a sixth nonconsecutive week, selling 276,000, according to Nielsen SoundScan. The set posts a big increase in sales (up 32%), as do most of the chart's titles. That's natural, since the most recent tracking week ended Sunday, Dec. 23, when consumers were busy shopping for last-minute Christmas gifts. T.I.'s latest album arrives in the runner-up slot with 179,000.