Zenith Ensemble presents its debut concerts in Portland and Brunswick this January. Northern New England-based, the new professional vocal ensemble is made up of some of the finest musicians in the country. Zenith will sing Duruflé: Requiem and Byrd: Mass for Five Voices at Bowdoin Chapel, Brunwsick on January 13 at 3 pm. They will also be joined for a special collaboration by the Oceanside High School Chamber Choir from Rockland. For tickets and information, go to www.zenithensemble.com