Mutya Buena

Rosa Isabel Mutya Buena (; born 21 May 1985) is a British singer and songwriter who rose to fame as a member of girl group Sugababes. With the Sugababes, Buena had four UK number-one singles, an additional six top-ten hits and three multi-platinum albums. After leaving the group in December 2005, Buena embarked on a solo career, releasing her debut solo album Real Girl in June 2007 under Island Records.

The album spawned three top-twenty hits on the UK Singles Chart; the title track which reached number two, "Song 4 Mutya (Out of Control)" (with Groove Armada) which reached number eight, and "This Is Not Real Love" (with George Michael) reaching number fifteen. Real Girl entered the top ten on the UK Albums Chart and was certified Gold by the British Phonograhic Industry (BPI).

Following the underperformance of the album's final two singles, "Just a Little Bit" and "B Boy Baby", Buena parted ways with Island Records in 2008. She subsequently collaborated with various independent artists including Ashley Walters, Don-E, Gak Jonze, and Coree Richards of Damage. In 2011, Buena reunited with her former Sugababes bandmates Siobhán Donaghy and Keisha Buchanan. The original trio opted to release music under the name MKS (Mutya Keisha Siobhan).

Their first single, "Flatline", was released in 2013 under Polydor Records, to moderate commercial success. The group embarked on an indefinite hiatus the following year. In September 2019, the trio officially confirmed their return as Sugababes, after regaining the rights to use the name.