McMETAMORTHOSIS: Bill McGathy, who became the most important Active Rock indie radio promoter in the pre-Eliot Spitzer era, has successfully reinvented himself as a manager, while contemporaries like Jeff McClusky and Lenny Lyons have all but vanished from the game. McGathy’s In De Goot Entertainment, which he launched, with great foresight, back in 1993, has turned into one of the premiere hard-rock management firms in the country. His client roster now includes a solid mix of veteran acts such as Chevelle, Shinedown, Saliva, Puddle of Mudd, Sevendust and Theory of a Deadman, along with promising major label newcomers like Island’s Neon Trees and Capitol’s Adelita’s Way, as well as in-demand rock producers Steven Haigler and Mike Watts, among others. (7/28a)