“First Lady of Song,” familiarly

The crossword clue “First Lady of Song,” familiarly is referring to a popular nickname given to the American jazz singer Ella Fitzgerald. Ella Fitzgerald was one of the most influential jazz vocalists of the 20th century, known for her incredible vocal range and improvisational skills. She became widely recognized as the “First Lady of Song” due to her numerous recordings and performances throughout her career, which spanned over six decades. Her contributions to the world of music continue to be celebrated and admired by fans and musicians alike. Therefore, the answer to this crossword clue is Ella.