Possible Clues:

• For this British city, what's bigger than a Tchaikovsky masterpiece?
• South Wales city
• Wales' second city
• Birds close to shore first to approach city
• Possibly as new as somewhere in Wales
• Royal property near unguarded port
• -- and Brecon, diocese in Wales
• City at the eastern end of the Gower peninsula
• Abertawe
• Perhaps pens article about English or Welsh football club