Baccara was a female vocal duo formed in 1977 by Spanish artists Mayte Mateos (born 7 February 1951) and María Mendiola (4 April 1952 - 11 September 2021). The duo rapidly achieved international success with their debut single "Yes Sir, I Can Boogie", which reached number one across much of Europe and became the best-selling single of all-time by a female group, eventually selling more than 18 million copies worldwide.