Related Clues:

• Warm up the crowd
• Devoid of a cover
• Be the first band to play
• __ season
• Word with "shop" or "sea"
• Admitting all
• Still unfilled
• Word in a shop window
• Free of obstructions
• Store-window sign
• Not booked
• Tournament for all
• Ajar, say
• Still unfilled, as a position
• Word with "house"