(PITTSFIELD, Mass.) – Vocalist-songwriter Natalie Merchant, the former frontwoman of 1980s folk-rock band 10,000 Maniacs, performs at the Colonial Theatre in Pittsfield, Mass., on Saturday, January 14, 2012, at 7:30 p.m.. The concert is a benefit for WAMC Northeast Public Radio based in Albany, N.Y. Merchant has spent five years researching, writing, and recording a…