21

Released in 2011, 21 is the second studio album by Adele. Produced by Rick Rubin and various collaborators, and released by XL Recordings, this album features chart-topping hits like "Rolling in the Deep" and "Someone Like You." The cover art, featuring a close-up of Adele's face with a minimalist design, captures the raw emotion and heartbreak expressed throughout the album, which explores themes of love and loss.