The crossword solution for the term 'Jazzy First Name' is Ella, which is a four letter name. Ella is a popular female given name of English origin, meaning 'all' or 'OTHER'. It is also a diminutive form of names such as Eleanor, Ellen, and Elizabeth. Ella is often associated with jazz music, due to the fame of Ella Fitzgerald, an American jazz singer and songwriter who was one of the most popular female jazz singers of the 20th century.