With bars offering live music dwindling, we’re happy we can still slither over to this intimate, subterranean performance haven in Porter. The makeshift stage—viewed from cabaret-style tables with beer and booze in hand—hosts a diverse lineup of nightly acts, from established local bands to novice poetry slammers. Tucked beneath Cambridge Common, it’s like the coolest basement party since your finger-snapping, liberal arts-degree days. No bong rips required.