Related Clues:

• 45's back
• It's usually not a hit
• Less popular song, often
• Single surface
• Single bonus?
• Surprise hit, maybe
• Hit back?
• Annie's song?
• Single's opposite
• Back of a single
• 45 half
• It's usually not a 11-Across
• Flip of a hit single
• Throwaway song on a 45, usually
• Song that begins "The sun'll come out"