The second show of the Merrick Arts Council season features two choruses from Lincoln performing close harmonies of Barbershop and Sweet Adelines music on Sunday, October 20 at 2:00 p.m. The men’s group will feature The Lincoln Continentals and the women’s group The Lincolnaires. Barbershop harmony is a style of unaccompanied vocal music characterized by consonant four-part chords for every…