Related Clues:
- Investigator's sources
- Tubes
- Singer's asset, slangily
- Water conduits
- Is in danger of sinking
- Vocal cords, informally
- Organ features
- Plumber's supply
- Vocal cords, in slang
- Security problems
- Corncobs and briars
- They'll hold water
- Sources or problems for investigators
- Wind instruments
- Elvis had good ones?