"Dangerously in Love" is an R&B-soul song written and produced by Destiny's Child frontwoman Beyoncé Knowles and producer Errol McCalla, Jr. The ballad was first recorded by Destiny's Child for their third studio album, Survivor (2001), with Knowles as the lead vocalist, and it is one of the few songs on the album Survivor that Knowles sings almost completely solo. It is also considered as one of her "signature" ballads.
Knowles re-recorded the song in 2003 for her debut solo album, Dangerously in Love, retitled "Dangerously in Love 2". Featuring a modified arrangement, Knowles' version received a generally positive response from music critics. In the United States, the song went for radio airplay only and was never released as a single in other countries. No official music video exists for the song, though the performance on her Live at Wembley DVD was frequently aired on BET.
Knowles often performs the song live as a prelude to "Crazy in Love", and more recently with her live cover of Jill Scott's 2000 song "He Loves Me (Lyzel in E Flat)" on her Beyoncé Experience tour. She performed "Dangerously in Love 2" at the 2004 Grammy Awards, where it won in the category of Best Female R&B Vocal Performance. On June 14, 2006 the song was certified gold by the RIAA for single sales of 500,000 copies.