The 2011 Adele album named for her age that includes “Rolling in the Deep” is 21.
21 is Adele’s second studio album, released in January 2011 in Europe and February 2011 in North America. Its title refers to the singer’s age while writing and recording much of the material, continuing the age-based naming pattern established by her debut album, 19.
“Rolling in the Deep” was released as the lead single in late 2010 and became one of Adele’s signature songs. The album also produced major singles including “Someone Like You,” “Set Fire to the Rain,” and “Rumour Has It.” Its emotional intensity drew heavily on Adele’s experiences following a breakup, which is why many of its songs are associated with heartbreak and personal change.
A common mix-up is choosing 19, Adele’s debut album, or 25, her 2015 follow-up. The number is not a chart position or release year: it identifies the age that shaped each album’s creation.