Related Clues:

• Exclamation of awe
• Fireworks watcher's word
• Sound from a wowed crowd
• "I like!"
• 'So nice!'
• Chorus-line opener
• Unveiling response, perhaps
• Lilted syllable
• '___-la-la!'
• Gay singing syllable
• "How beautiful!"
• "Nice!"
• 'I know that one!'
• Melodic bit
• "Color me impressed!"