Allan Holdsworth The fusion era of the 1970s was no doubt among the most controversial periods in jazz history. Analogous to the rise of be-bop during the 1940s and ’50s, instrumentalists broke new ground, taking the technical aspects of jazz music to new heights. But also like pioneers such as Charlie Parker and Dizzy Gillespie, explorers of the ’70s often saw their music fall on deaf ears, because listening could not be a passive…