When is a tribute band more than just a tribute band? At first blush, Pylon Reenactment Society would appear to be a modern tribute to the inventive late-1970s Athens, Georgia, post-punk band group Pylon. But PRS differ from typical cover bands in two significant ways. The homage is fronted by Pylon’s provocative singer, Vanessa Briscoe Hay, giving the project immediate credibility. Another significant difference is that Hay’s current group doesn’t only perform vintage Pylon classics such as “Cool,” “Weather Radio” and “No Clocks.” PRS just released a 7-inch single with two brand-new songs, “Messenger” backed with “Cliff Notes.” The A-side is an intriguing track as Hay purrs enigmatically over a rubbery bass line and sliced-up guitar accents, emphasizing that the charismatic vocalist’s worldview is just as (post)modern as ever.