The Butler County Symphony Orchestra will feature Capitol Quartet, a saxophone ensemble, at 8 p.m. May 3 in the auditorium of the Butler Intermediate High School, 551 Fairground Hill Road.

The theme for this final concert of the 59th season is "Spotlight on Sax-y Music."

The Capitol Quartet will perform arrangements of swing-era classics and film music.

Reserved seats cost $15 for adults and $8 for students and are available at the symphony office, 259 S. Main St. At the door, tickets will cost $18 and $9, respectively.

For more information, call 724-283-1402 or visit the Web site, www.butlersymphony.org.

BUTLER TWP — The Tornado Big Band, along with the Butler Swing Choir, will host its fifth annual dance from 7 to 10 p.m. Saturday in the Butler Senior High School Cafeteria.Admission is free.The band is made up of students in grades seven through 12 under the direction of Butler Intermediate School music teacher Jeff Kroner.Other upcoming performances will include participation in the FAB Art Show on April 19 at the intermediate high school, and an 8 p.m. concert on April 26 at the Succop Theater at Butler County Community College.For more information, visit the Web site, www.tornadobigband.com.

SLIPPERY ROCK TWP, Lawrence County — McConnells Mill State Park will be the site of "Earth Weekend Clean-Up" on April 19.Those wishing to participate should meet at 10 a.m. in the Kildoo parking lot.The staff is hosting a "Gear-up for Earth Day" at 4 p.m. April 22.And already on the calendar is the McConnells Mill Heritage Festival, set for Sept. 27 and 28.

PITTSBURGH — While the professionals are teeing off at the Masters PGA Tournament, a different breed of birdies and eagles can be seen at three different golf holes set up on-site at the National Aviary from 10 a.m. to 2 p.m. Saturday.Visitors can also enjoy the indoor free-flight bird show, say hello to Wookie the sloth, and take advantage of opportunities to hand-feed the birds in the Tropical Forest and Wetlands exhibits.All activities free with admission, which is $9 for adults, $8 for seniors, $7.50 for children ages 2 to 12, and free for children younger than 2.The aviary is open seven days a week, from 10 a.m. to 5 p.m. More information is available by calling 412-323-7235 or by visiting the Web site, www.aviary.org.

EVANS CITY — "The Great Upheaval: Understanding the Early 21st Century Through the Lens of the Late 18th Century" will take place from 4 to 8 p.m. Saturday at Providence Plantation, 300 Textor Hill Road.Call 724-538-8818 for admission information, or visit the Web site, www.frontier-history.org.

A second book signing by author Edward R. Flick of Boyers is planned for noon to 3 p.m. Saturday at Borders Express at Clearview Mall.Flick wrote "Sex Offense," which was published through AuthorHouse.

SLIPPERY ROCK — Ghost-in-the-Head, a Huron warrior stunningly outfitted, and Shining Spirit, a Cherokee woman, will speak at 2 p.m. April 20 at Jennings Environmental Education Center, Route 528 near the intersection of Routes 8 and 173.The program about the wilderness lifestyle of Great Lakes and Eastern Woodlands Indians will include hands-on demonstrations.Also at Jennings, a program on "Take Back the Woods: Battling Invasive Species" will take place from 9 a.m. to 1 p.m. April 26. Registration by April 18 is necessary and participants must be age 12 or older.Call 724-794-6011.