Singer-songwriter and Boston-based multi-instrumentalist Erin McKeown is about to release her latest work, Manifestra, on which much of the content deals with social and political issues. On Jan. 18, experience a night of alternative indie music, as she will play Le Poisson Rouge with Jenn Grant opening the show. See her again at Brooklyn’s Littlefield on Jan. 19, and Johnny Brenda’s, in Philly, on Jan. 20.