María del Mar Cuena Seisdedos (born 11 December 1966 in Baracaldo), known under the stage names Tamara (1990–2004), Ámbar (2004–2005) and then Yurena (from 2005) is a Spanish pop singer. Her early career was marred by controversy, but after a five-year hiatus from the music industry while she operated a club, she launched a successful comeback. Her music was introduced to China in 2014.