Singers Marin is proud to present its Winter Concert titled “43° and Overcast, Alleluia: A Celebration of Winter in Marin” at the Westminster Presbyterian Church in Tiburon on Dec. 11. The program includes medieval chants to folk music from the Sami to holiday pop music and a composition by Bay Area composer Mitchell Covington. The performance will begin at 4 p.m. Tickets are available at singersmarin.org.