Fully aware of

• "___ the Roof," 1962 song
• "___ the Roof" (1962 Drifters hit)
• It follows once
• '-- further review ...'
• Broadway's "Once ___ a Mattress"
• Second word of fairy tale openings
• "When you wish __ a star . . ."
• 'Oncea time'
• Drifters' "--- the Roof"

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