I make it a tie which leaves me with casting vote.
Both clues from mattrom were excellent but if there has to be just one winner then my vote goes to mattrom @ post 26
Italian house where the fat lady sings for the Grand Duke, perhaps (5,5)
Well done mattrom as winner and runner up
Here is your prize
https://www.youtube.com/watch?v=zSGWoXDFM64
Thanks to everybody for taking part