Sergio Novak is the ex-husband of Shirley Bassey. Sergio Novak’s ex-wife is a Welsh singer. She is renowned for her strident sultry voice, sequined gowns, and lavish jewelry. She was a forerunner of the score of pop music divas who emerged in the last decades of the 20th century. She recorded the theme songs to three James Bond films- Goldfinger (), Diamonds Are Forever (), and.