Jazz has given us some of the most iconic voices in music history. From soulful blues queens to scat masters and smooth crooners, these singers have shaped the genre with their unique styles and timeless hits. Think you're a true jazz aficionado? Put your knowledge to the test with this quiz! We'll provide clues about their careers, famous songs, nicknames, and contributions. See if you can identify all 40 from the descriptions and options. Whether you're a longtime fan or just exploring jazz, this is your chance to celebrate these legends and maybe discover a new favorite. Ready to swing into action? Let's see how many you can name!