Possible Clues:

• Break site
• It's cooler inside
• See 1-Down
• Can petrel set about skua's head?
• Emperor rumoured a peak performer - followed by groan
• Can spin or twist
• Seems one's willing at last to be inside there (6)
• 'Fidelio' setting
• If you rip it in bits, my boy, that's where they may send you
• Sell, by the sound of it, what's in the jug