This evening, the Delaware River Waterfront Corporation will erect a stage at Spruce Street Harbor Park for a free pop-up concert that will be benefit Vox Populi Gallery and will include video projections and sculptures from some of its artist-members. The show features a duel-headed juggernaut of local psych-rock in Purling Hiss as well as Chris Forsyth & the Solar Motel. The trio of Purling Hiss explores and bends the boundaries, placing themselves somewhere that pulls elements from the noise, shoegaze, psych scenarios, while also incorporating delicate melodies with a take it or leave it garage aesthetic and raunchy instrumentation that include monsterous extended guitar jams. It’s a complex sound that when boiled down tastes like what rock ‘n’ roll is all about. Speaking of going out there, Chris Forsyth and company dare (guitar in hand) to push those concepts. Tearing down artificial walls as part of what becomes a sonic journey organically stretching the fabric of convention with elongated instrumental charges, revealing what lies just beyond the edge. This will be nice warm-up for their set tomorrow night at The Boot & Saddle opening for Oneida. (If necessary, the rain date is scheduled for this Sunday, July 27th at 7:30pm.) Spruce Street Harbor Park, (Spruce St. & Columbus Ave.) 7:30pm, Free, All Ages – Michael Colavita