Adele album is in its 19th aggregate week at No. 1 in the UK, a run that started on the first of its 50 chart weeks in January last year. That becomes the longest calendar sequence since Simon & Garfunkel’s “Bridge Over Troubled Water” between February 1970 and January 1971, during which time it had had 33 non-consecutive weeks at the summit. “21” is also the longest-running No. 1 by a female artist in U.K. chart history, and the sixth longest for any artist album, not including soundtracks.