John Surman 's World of Jazz. JohnSurman continues his exploration of the links between world music and jazz with a look at India. Starting with Joe Harriott and Indo Jazz Fusions in the sixties he follows the story through to the present with the co-leader of that band, John Mayer. He also hears from Jack DeJohnette about the pioneering ideas of the late Collin Walcott , while Trilok Gurtu discusses Indian percussion and vocal techniques. Producer Terry Carter