Possible Clues:

• 'The robber has got no fine locks, by the sound of it (7)'
• Return of fabled bird vexed Scottish pirate
• My second tune, one from The Pirates of Penzance?
• Pirate's pronounced vulgar manner
• Not, by the sound of it, the fine locks of the pirate
• Rude song is what you may hear from pirate
• Rover's rough coat, we hear
• The pirate has not got fine locks, by the sound of it
• Pirate radio broadcast of vulgar tune
• A swift pirate ship