The answer to the crossword is SADE, a four-letter singer who released the song 'Your Love Is King' in 1984. Sade is a British singer, songwriter, and actress who has been active since the early 1980s. She is best known for her soulful, smooth sound and her signature look. Her debut album, Diamond Life, was released in 1984 and featured the hit single 'Your Love Is King'. The song was a top 10 hit in the UK and a top 20 hit in the US.