Related Clues:

• Firm up, as muscles
• Work on one's muscles
• Vocal pitch
• Dial ___ (phone sound)
• Character of sound
• Cosmetologist's concern
• Voice-mail cue
• Work on, as abs
• Word after dial or earth
• Prevailing character
• Call waiting signal
• Call-waiting signal
• Muscular firmness
• Ring __
• Shape (up)