Possible Clues:

• ''Wait ___ the Sun Shines, Nellie''
• Open ___ …
• To the time when, briefly
• "Open ___ 9"
• Poetic preposition
• "__ the World Ends": 1975 hit
• 1961 hit song by The Angels
• The Everly Brothers' '(___) I Kissed You'
• Until to Tennyson
• Shop -- you drop