Susan said in a TV interview that it was a moment of chestiness and indeed you can see her strike her chest after the first note. She then recovered strongly and even Simon Cowell gave her a standing ovation.

Unfortunately Jamie Pugh allowed his nerves to affect everything in the higher register and his last note was too low for the normal ending to the only decent song from Man of La Mancha. Perhaps getting a buzz from Amanda did not help though.

The trouble with a live show is you only get one chance and whereas you can do retakes in a recording studio (and I have seen even people like Kiri Te Kanawa sing bum notes) you have to make do in a live performance and if you have a bum note you carry on.