Unexpectedly, a JMI Supreme and Defiant on stage at the Copenhagen Jazz Festival, October 1968 - presumably thanks to the efforts and ingenuity of Reg Clark (General Sales Manager) and his team - see the mini-biographies on these pages. By the time the concert took place, JMI had gone, replaced by "Vox Sound Equipment Limited".

John Lee Hooker and T-Bone Walker. Photo by Jan Persson from Getty images.

Muddy Waters and band: the Defiant, which Muddy is using, seen from back of stage.