Related Clues:

• '___ Blue?' (1929 #1 hit)
• Start of Cain's query
• Bon ___
• Friend en francais
• '___ the only one?'
• French friend
• Aramis, to Athos
• Prefix with -vert
• '___ Blue?'
• Brest friend
• '___ dreaming?'
• 'Who, me?'
• See 33-Across
• Paris pal
• Prefix with polar