BLT opens comedy FridayButler Little Theatre opens the final show of its 75 anniversary season, “Come Blow Your Horn,” Friday at the theater at One Howard St.Curtain is at 8:15 p.m. Fridays and Saturdays, 2:30 p.m. Sunday and 7:30 p.m. Tuesday, Wednesday and Thursday through May 14.Cast members include Jeff Carey, Bob Dandoy, Amy Dittman, Shannon Donovan, Sis Fleming and Jordan Meals.Tickets are $12. For reservations, call 724-287-6781 from 7 to 9 p.m. Mondays through Fridays. For more information, visit bltgroup.org.

Chain saw event comingCONNOQUENESSING TWP — The fourth annual Butler Chain Saw Carving Invitational is 10 a.m. to 8 p.m. May 13 at the Butler Farm Show grounds, Route 68. Food, vendors, music and an auction are planned. Admission is $5. For information, visit butlerchainsawcarving.com.

State park hosts campsMUDDY CREEK TWP — Moraine State Park will have children’s DiscoverE Day Camps. Registration is required. The classes have fees. Call 724-368-8811.Hide ‘n Seekers for ages 4 and 5 is July 8, 15 and 22. Sessions are 10 a.m. to noon, and 1 to 3 p.m.Outdoor Explorers — Reptiles & Amphibians for ages 6 to 8 is July 21, 28, and Aug. 4, with sessions from 10 a.m. to noon or 1 to 3 p.m.Penn’s Adventurers for ages 9 to 12 will feature outdoor skills and adventures June 17, 24, and July 1 from 10 a.m. to 2 p.m.

Museum starts themed FridaysHARMONY — The Harmony Museum on Friday will introduce a new First Friday series of free family-oriented open houses in its Wagner House Museum Shop and garden at 222 Mercer St.Running from 4 to 7 p.m. on the first Friday of each month through summer, each event will be themed to a “National Day” designated for the date, with the outing this week marking National Beverage Day.Donut Day and Root Beer Float Day will be among the future themes. Call 724-452-7341 for information.

Youth group gives concertPITTSBURGH — the Pittsburgh Youth Symphony Orchestra will present “The Planets” concert at 7:30 p.m. May 22 at Heinz Hall, 600 Penn Ave. Admission is free, but tickets are required and available for download at www.pyso.org or by calling 412-392-4872.