A menacing psych/hard-rock heaviness engulfs on Parallel Hell, the latest LP from Northern Liberties. Spirited vocals and a relentless rhythm section create a consuming, contagious sound. It’s been over a decade and a half that Renaissance man Justin Duerr has been releasing material via this creative outlet. Duerr continues to demonstrate how he’s an unflinching, uncompromising musical force of nature in the Philly underground.