A Bach set for Christmas at H&H
Scott Metcalfe, music director of the Renaissance choir Blue Heron (below), has counted as a rising star ever since the New Yorker deigned to notice one of his CDs (anyone in the know in New England already knew that Blue Heron was fabulous, but suddenly it was official). That new minor-celebirty status, combined with his carefully structured conducting (with thoughtful scholarship backing up each and every choi…