Related Clues:

• 2015 for one pop star failing at first to hold note
• Sarcastic 'That was a great...'
• Whole unit, say, brought into Bury?
• ' Like It Hot'
• Few
• Number theory number
• The first parts of 17- and 22-Across are always this, the first part of 46-Across is sometimes this, and the first part of 55-Across is never this
• Number of good men?
• Phrase that might actually mean five or six
• An unspecified amount of
• Some cafe with sandwiches
• Four, say
• Bury keys inside one, for example?
• Not none, not all
• Four or five, say