Related Clues:

• Expression of disbelief
• Cry of contentment
• Backup singer's syllable
• Awed one's reaction
• Hot-tub sigh
• Satisfied sigh
• "Holy cow!"
• ''__ la la!''
• 'This is so-o-o relaxing!'
• 'Sweet!'
• 'That's gotta hurt!'
• Cry at a light show
• '-- -la-la!'
• Amazed exclamation
• Response during a medical checkup