Related Clues:

• Single bonus?
• Album's first half
• Surprise hit, maybe
• Musician's better half?
• Hit back?
• Single's opposite
• First half of an album
• Back of a single
• 45 half
• It's usually not a 11-Across
• Hit home?
• Flip of a hit single
• Throwaway song on a 45, usually
• Half of a 45 with more airplay
• Deejay's interest, typically