Marcos Llunas (born 19 September 1971, Madrid) is a Spanish singer-songwriter who has been successful in southern Europe and Latin America and is known for his participation in the 1997 Eurovision Song Contest. Llunas, son of Spanish musician Dyango, released his self-titled first album in 1993. He recorded several moderately successful singles, and in 1995, in Paraguay, won the OTI Song Festival for Spain with the song "Eres mi debilidad". In 1997