Nick Millhiser and Alex Frankel of Holy Ghost! developed an appreciation for the '70s and '80s dance sound while digging through bargain bins for records as kids. Now they're all grown up and creating their own kind of revamped disco pop. "Say My Name," from the duo's recent Static on the Wire EP, abounds in old school slinkiness, bringing to mind the era of disco balls and multicolored, illuminated dance floors. Tonight Holy Ghost! open up Central Park's SummerStage show featuring Hot Chip.