Lewiston High School junior Brittany Martin, second from left, and other members of the Chamber Singers finish their piece during “O Tidings of Comfort & Joy!” at the Lewiston Public Library on Wednesday evening. The audience enjoyed a free holiday musical celebration under the direction of LHS vocal director Rebecca Poppke. The LHS Chamber Singers will perform again on Monday at the Franco-American Heritage Center during the Lewiston High School Holiday Concert. The performance is free and begins at 7 p.m.