Brooklyn-based alt-rockers Mx Lonely have just unveiled “March 16th” (featuring Caitlin Starr), the profound lead single from their highly anticipated new EP, PERFECT HOUSE (dropping October 2 via Julia’s War Recordings). The Sound: Cavernous alt-rock meets raw catharsis! Originally written as an instrumental during the sessions for their debut album ALL MONSTERS, “March 16th” exploded…