As Adele's "21" heads back to No. 1 for an 11th nonconsecutive week (up two slots with 77,000, according to Nielsen SoundScan; a gain of 1%) -- the longest No. 1 run since 2009 -- the late Amy Winehouse returns to the top 10 with "Back to Black" at No. 9 (37,000; up 3,140%).