Related Clues:

• Alban Berg opera
• Opera singer
• Spot on a domino
• Citrus seed, e.g.
• Wunderkind
• ''To Sir, With Love'' singer
• ''To Sir With Love'' songstress
• Gladys Knight backup singer
• Card spot
• Spade or diamond
• Domino spot
• Playing card dot
• A real doozie
• ''To Sir, With Love'' vocalist
• Something extraordinary