21 is the second studio album by the English singer-songwriter Adele. It was released on 24 January 2011 in Europe by XL Recordings and on 22 February 2011 in North America by Columbia Records. The album was named after the age of the singer during its production. 21 shares the Motown and soul influences of her 2008 debut album 19, but also draws influence from the American country and Southern blues music that Adele started listening to during the North American leg of her tour An Evening with Adele. Composed in the aftermath of the singer's separation from her then partner, the album explores themes of heartbreak, healing, introspection, and forgiveness.

Adele Laurie Blue Adkins, known mononymously as Adele, is an English singer-songwriter. She is known for her mezzo-soprano vocals and sentimental songwriting. Adele has received numerous accolades including 16 Grammy Awards, 12 Brit Awards, an Academy Award, a Primetime Emmy Award, and a Golden Globe Award.