Possible Clues:

• Dance said to be attention-seeking?
• 'Well, sor-ry!'
• Dance about before exercise ending in swim in river
• Response to an insult
• Caught with dancing muse in river, I'm sorry I have to go
• Apology for interruption
• Release master key to get someone's attention
• 'I beg your pardon?'
• In which partner takes steps to leave you?
• Apology for a dance