What links Boris Johnson and Hans Werner Henze?

An unlikely link between Boris Johnson and Hans Werner Henze was pointed out on Twitter today: 

Sounds like a hoax? That’s what I thought too, but you will find the piece listed in Henze’s catalogue, here.

As one wag pointed out: ‘Call me uncharitable, but I don’t get a sense he put his heart and soul into this one…’

Originally posted at Composition:Today ©Red Balloon Technology