Related Clues:

• 'Whew!'
• High-pitched
• Youth
• Tyke
• See 50-Across
• 'Holy cow!'
• 'Gee!'
• Unnatural high
• Youngster
• Man-to-be
• 'Wow!'
• Novelty singing feature
• See 38-Across
• 'Golly!'
• See 5-Down