The Agoura Hills Harmony Chorus, an award-winning a cappella four-part women’s chorus, is offering a four-week series of vocal lessons at 7 p.m. Tuesdays, May 3, 10, 17 and 24, at St. Patrick’s Episcopal Church, One Church Road, Thousand Oaks. No experience is necessary to participate. The chorus will provide voice range part placement and learning tapes. The cost of instruction and materials is $16. For more information, please call (805) 531-3714.