This modern jazz summit meeting in Toronto has been called "the greatest jazz concert ever." We owe the survival of the music to Charles Mingus, who, along with Max Roach, taped the concert and subsequently issued it on his own new Debut label. There was tension between the giants before, during, and after the concert. Bird arrived without a horn and had to borrow a plastic alto (he made it sound like gold). The hall was three-quarters empty (the promoters had overlooked the coinciding heavyweight championship match between Marciano and Walcott). But the true heavyweights were onstage, and the results have been knocking out the world of jazz ever since.