Related Clues:

• Time signal, maybe
• Fine-tune, as muscles
• Normal elasticity
• Cattleman's product
• Taco ingredient
• Muscle or musical quality
• A kid may be told to watch it
• Surf-and-turf part
• -- Wellington
• Vocal quality
• The sound of music
• Firm up, as muscles
• Work on one's muscles
• Vocal pitch
• Dial ___ (phone sound)