Ella Fitzgerald, also known as the 'Queen of Jazz', was an American jazz singer and songwriter. She was one of the most popular and influential jazz vocalists of the 20th century, with a career spanning over 60 years. She won 13 Grammy Awards and sold over 40 million albums. Her voice was described as 'mellow yet vibrant, sweet yet saucy, and improvisational yet precise'. She is remembered for her signature scat singing style and her interpretations of the Great American Songbook.