Possible Clues:

• Dissension as event with loud music gets on the road
• Novelist's bird which travelled from Rouen to Barnes
• Record ring road contention
• Cacophony the party way?
• Friction
• How D's so stringy, and not nice, by the sound of it
• Cacophony from dance club next to the highway
• When Sidney turns up with the string there's none of it in 14 down
• Dissension
• Strife at the top of the 8-down road