Possible Clues:

• "__ a traveller from an antique land": "Ozymandias"
• ''How __ Your Motherù''
• Start of Shelley's ''Ozymandias''
• Atmosphere
• "How ___ Your Mother"
• First two words of Shelley's 'Ozymandias'
• TV's "How ___ Your Mother"
• 1956 hit, "Since ___ You Baby"
• '__ a girl who sang the blues': Don McLean lyric
• The Box Tops' '___ Her in Church'