what you know about rolling in the deep

"Rolling in the Deep" is a song by English singer-songwriter Adele, released as the lead single and opening track from her second studio album, 21 (2011). The song was co-written by Adele and producer Paul Epworth. Adele describes it as a "dark blues-y gospel disco tune." It marked a major breakthrough for Adele, becoming her first number-one song in the United States, where it topped the Billboard Hot 100 for seven weeks and sold over 8.7 million copies by February 2012. Globally, it has sold over 20.6 million copies, making it one of the best-selling digital singles of all time. Musically, the song features martial beats, pounding piano keys, and chanting backing singers, and Adele's powerful vocal delivery has been praised as soulful with a hint of blues. Lyrically, "Rolling in the Deep" is sung from the perspective of a scorned lover who has been betrayed but is not seeking reconciliation. The song's title refers to a UK slang phrase "roll deep," meaning always having someone's support or backup, which Adele used metaphorically to describe her broken relationship. The song received widespread critical acclaim for its production, lyrics, and Adele's vocal performance. It was released on November 29, 2010, and received multiple awards, consolidating Adele's global stardom.