Related Clues:
- Bocelli or Domingo
- Brain output
- It might come off the top of your head
- Train of thought
- Carreras or Domingo
- Inventor's forte
- Brainy output
- Voice below alto
- Male operatic voice
- Noodle output?
- Thinker's output
- Its icon is a light bulb
- Creative contribution
- ''You have no ___!''
- Wagner's Tannhäuser, e.g.