Related Clues:

• Palo ___, Calif.
• Voice from the loft
• Tijuana traffic sign
• Tone
• Quarter of a quartet, perhaps
• Countertenor range
• She's deep
• Opera hero, often
• Vibe
• Counter-tenor
• Pavarotti, notably
• Certain voice
• Choir role
• Cumulus lead-in
• Jan Peerce, e.g.