Possible Clues:

• 'Luck Be __'
• 'Luck Be __' (Sinatra hit)
• 'Luck Be --'
• Commodores "Three Times ___"
• 'Three Times ___'
• 'Luck Be ___'
• "Luck Be ___"
• "Three Times __": Commodores hit
• Celine's 'Treat Her Like --'
• Henry James's 'The Portrait of ___'