CENTRAL VALLEY-A concert of a cappella four-part harmonies, barbershop style, will be presented at 3 p.m. on Sunday, Oct. 23, at the Monroe-Woodbury Middle School in Central Valley. The concert, titled “Celebration,” will be sung by the Goshen-based Song of the Valley Chorus Sweet Adelines International. The show features two special guest quartets, Mixed Company and The Footlighters. Mixed Company is composed of two men and two women who perform their entire repertoire in four-part harmony. The Footlighters, a three time division-winning quartet from the Poughkeepsie Chapter of the Barbershop Harmony Society, are noted for their comedy and novelty on stage. Erin Slaver, a teenager from Liberty, will also perform. She started taking violin lessons at age three, and plays everything from fiddle tunes to classical music. Her father, John, accompanies her on guitar. This is the first show that Song of the Valley will perform with its new director, Lisbet P. Kline. Tickets are $18 at the door of $15 in advance. Senior citizens and students pay $15. Groups of ten or more pay $10 each. The Song of the Valley Chorus, Sweet Adelines International, meets every Tuesday, from 7 to 10 p.m., at the BOCES campus in Goshen. For more information call 496-7573.