CAMBRIDGE, Mass. — The Erevan Choral Society of the Holy Trinity Armenian Church of Cambridge, pictured above, is welcoming voices in all sections in preparation for its Annual Christmas Holiday Concert on Sunday, December 10 in the Sanctuary of the Church. Rehearsals are held on Tuesday and Thursday evenings, from 7:30 – 9:30 p.m. in the Talanian Hall of the church under the direction of Konstantin Petrossian. To join this group , and for more information, contact Aida Diloyan at adiloyan@verizon.net