Demon/Edsel’s Dance Masters series only just released its second volume this summer – but a third one is on the way this fall, spotlighting the work of acclaimed remixer John Luongo. The Arthur Baker-presented series follows generous box sets on Shep Pettibone and Baker himself with a new overview of John “T.C.” Luongo, who parlayed working in and around the Boston club scene into more than a decade of 12″ remix work, first for some of the greatest R&B artists crossing over into disco, and then fusing cutting edge dance sounds to…