21 features production from Rick Rubin, Paul Epworth, and Ryan Tedder among others, and was released to critical acclaim, with reviewers lauding Adele's vocal performance and introspective songwriting. Preceded by lead single "Rolling in the Deep", the album debuted at number one on the UK Album Chart, as well as debuting at number one in over ten countries, including Canada, Germany and Ireland. It also debuted at number one on the U.S. Billboard 200 Chart.
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