The term CLEO OF JAZZ is a reference to the jazz singer and actress Cleo Laine, who was born in 1927. Her full name is Clementine Dinah Laine, and she is known for her work with her husband, John Dankworth. The crossword solutions for this term are LAINE (5 letters), MARC (4 letters), ASP (3 letters), AGE (3 letters), and NILE (4 letters). LAINE is a reference to her last name, MARC is a reference to her husband's first name, ASP is a reference to her middle name, AGE is a reference to her AGE, and NILE is a reference to her first name.