Possible Clues:

• ''What'll __?'' (bartender's question)
• Beatles' 'Let __'
• Beatles' "Let __"
• ''Never let __ said . . .''
• 'Let ___' (Beatles tune)
• Beatles "There will be an answer, let ___"
• 'Let ___' (Beatles hit)
• "There will be an answer, let ___"
• "Speaking words of wisdom, let ___"
• "Let ___"