Possible Clues:

• Reckoning this is what they do when they get to Bray
• Working out how much gin to have mixed with 28 across
• Reckoning how silly they are in song
• Idiots do vocal turn for judging
• Working out how much they do when they get to Bray, perhaps
• Reckoning that's what the mokes do when they come to Bray
• How 6 down get invoiced when they get to Bray
• Reckoning this is what the mokes do when they get to Bray
• Reckoning how musical the mokes may be
• Reckoning what they do when they get to Bray