Possible Clues:

• What may come between two friends?
• Janet Jackson "Son ___ Gun (I Betcha Think This Song Is About You)"
• 'Diary ___ Wimpy Kid'
• Smile Empty Soul "Bottom ___ Bottle"
• System __ Down
• Words with piece or sort
• Clay Aiken "Measure ___ Man"
• Depeche Mode "Barrel ___ Gun"
• All ___ sudden
• Nine Days "Absolutely (Story ___ Girl)"