After an uncertain start to the concert - one band member recalled the assembled aristocrats inspected them through eyeglasses "as though there were bugs on us" - thekingroared his approval, loudly applauding their rendition of Tiger Rag.
After leading 18-0 inside 13 minutes thanks to tries from Michael Monaghan, Rhys Williams and Matt King, Saints roared back to lead 22-18 at the break.