SLIPPERY ROCK The Musicians' Concert Band, a community group, will perform in concert on the following dates: June 11 and 25, July 9 and 23 and Aug. 6.

All of these concerts will begin at 7:30 p.m. in Miller Auditorium at Slippery Rock University.

The MCB Swing Band will join in the July 23 show. Admission to each concert is $3. Jeff Kroner is the music director.

The Associated Artists of Butler County will have a reception for "The Green Show" from 7 to 9 p.m. Friday at The Art Center, 344 S. Main St. This is a juried exhibit with a $250 cash award for Best of Show.The exhibit continues through April 24. Regular gallery hours are noon to 6 p.m. Wednesdays and Thursdays noon to 9 p.m. Fridays, and noon to 4 p.m. Saturdays.Admission is free. Call 724-283-6922 or visit www.butlerartcenter.net.

PITTSBURGH The Pittsburgh Symphony Orchestra will host the first Butler County Night at the Symphony on June 18 at Heinz Hall, 600 Penn Ave.Butler County residents can attend a 7:30 p.m. concert at a special price and meet Principal Pops conductor Marvin Hamlisch.The program features Hamlisch and guest artist Ellis Hall celebrating the music of Ray Charles.The event also includes a postconcert reception where guests can learn about Butler County arts organizations.Tickets cost $27 and are available online at www.visitbutlercounty.com.

SAXONBURG The Rock at Knoch spring edition will take place April 24 at Knoch High School.This battle of the bands will start at 5 p.m. with the last band going on stage about 10:30 p.m. About eight to 10 bands will compete.For information, send e-mail to: erfreyermuthaol.com.

"A Tribute of Song" is the theme for the spring concerts to be presented by The Bach Society on May 1 and 2.The May 1 concert will be at Center Presbyterian Church in Slippery Rock.The concert on May 2 will be at Tower Presbyterian Church in Grove City.Both concerts will start at 8 p.m. Admission is free.These two concerts will be sung in memory of Frank B. Stearns, who directed the choir from 2003 to 2008. He directed the choir for the Christmas concerts in December and then lost his battle with cancer in February.

PITTSBURGH The National Aviary will offer free admission on April 22, Earth Day, in celebration of the groundbreaking for the new Helen M. Schmidt FliteZoneTM Theater.Free admission is being presented courtesy of Citizens Bank Foundation.The day's activities kick off with a groundbreaking ceremony, dove release and visits by Pittsburgh team mascots the Pirate Parrot, Steely McBeam and Iceburgh at 10:30 a.m.Tours of Penguin Point, the National Aviary's new African penguin exhibit under construction, will follow, weather permitting.Free-flight bird shows will be presented at 11:30 a.m. and 2:30 p.m., and interactive feedings are scheduled throughout the day.The National Aviary is open from 10 a.m. to 5 p.m. daily. For more information, call 412-323-7235 or visit the Web site, www.aviary.org.

PITTSBURGH The Pittsburgh Youth Symphony Orchestra will give a free concert at 3 p.m. May 3 at Heinz Hall, 600 Penn Ave.For this concert, the final one of the group's 2008-09 season, the youth orchestra will present the world premiere of "Mary Lou: Four Symphonic Memories of Mary Lou Williams," commissioned by and written for PYSO by composer John Harbison.Harp soloist will be Lana Greenawald. Daniel Meyer is the music director, and Lawrence Loh is the co-principal conductor.The concert is free, but tickets are required for admission. To download free tickets, visit the Web site, www.pyso.us.

FINLEYVILLE The Daffodil and Hosta Society of Western Pennsylvania will present a Daffodil Show from 1 to 5 p.m. Saturday at Trax Farm, 528 Trax Road.The event is free and open to the public.The show is a juried cut flower show that offers the opportunity to area daffodil gardeners to showcase their best daffodils. Members as well as nonmembers may enter.Entries for the juried show will be accepted from 7 to 10 a.m. Saturday. Judging will take place between 10:30 a.m. and 1 p.m. Upon completion of judging, the cut flower exhibit will be open to the general public.

PITTSBURGH Playhouse Jr., the children's theatre company of Point Park University's Conservatory of Performing Arts, celebrates its 60th season with two shows in May.The classic children's tale "Charlotte's Web," adapted by Joseph Robinette with music and lyrics by Charles Strouse, will be presented May 8 to 24 on the Rockwell Theater stage.The world premiere of the fairy tale "Five Children and It," based on the novel by E. Nesbit and directed and written by local playwright Yoli, will be performed May 8 to 24 on the Rauh Stage.Both stages are in the Pittsburgh Playhouse, 222 Craft Ave. Tickets are $7.For information, call 412-621-4445 or visit the Web site, www.pittsburghplayhouse.com.

PITTSBURGH The Pittsburgh Concert Chorale will present "The Fabulous '50s, Swingin' '60s!" on May 2 and 3 as a conclusion to the 2008-09 regular season.The concert will be performed at 8 p.m. May 2 at Fox Chapel Presbyterian Church, 384 Fox Chapel Road, and at 4 p.m. May 3 at Ingomar United Methodist Church, 1501 W. Ingomar Road.Tickets prices range from $16 to $20 for adults, $8 for students, and free for children younger than 12.Call 412-635-7654 for more information.In addition, the Concert Chorale will appear as guests of the Pittsburgh Civic Orchestra to perform Beethoven's Symphony No. 9 on May 16 at Upper St. Clair High School.

PITTSBURGH The 2009 Pittsburgh International Children's Festival is scheduled for May 13 to 17 at venues in Oakland.The 23rd annual festival performance sites include Charity Randall Theatre, Studio Theatre, Bellefield Hall Auditorium, Synod Hall and Carnegie Lecture Hall.Seven shows will fill the playbill:• Goodnight Moon and The Runaway Bunny, by Mermaid Theatre of Nova Scotia, Canada• Farfalle: The Butterfly Garden, by Teatro di Piazza O D'Occassione of Prato, Italy• The Hobbit from Beneath the Stage, by Beumer & Drost of the Netherlands• African Sunshine, by Compagnie Punta Negra of Congo• Kraft, by Bambalina of Spain• Harmony Street, by Resonance Percussion of the United StatesMister Rogers' Neighbors.Tickets are $8 each. Call 412-456-6666 or visit the Web site, www.pghkids.org, for show times.The festival grounds, free to the public, will complement the featured performances with hands-on cultural and educational activities, roving artists, booths, and exhibitors.

NEW WILMINGTON The Westminster College Celebrity Series will bring the children's show, "Magic Tree House: The Musical," to the stage at 7 p.m. May 14 in Orr Auditorium on campus.Tickets for this family-friendly, full-scale, Broadway-style musical based in the book series by Mary Pope Osborne, range from $12 to $20.For more information, call 724-946-7354 or visit www.westminster.edu/Celebrity.

TITUSVILLE The Petroleum History Institute is conducting its annual International Symposium and Field Trip on May 14, 15 and 16 in Titusville. The theme is "Return to the Valley That Changed the World" during the 150th anniversary year of the Drake well.The gathering will include technical presentations, guided field trips, an awards banquet, poster displays and social interaction. For the complete schedule and fee structure, visit the Web site, www.petroleumhistory.org, or call 814-677-3152, Ext. 105.

PITTSBURGH Single tickets to Pittsburgh CLO's 2009 summer season shows will be available beginning Monday.The season includes "Joseph and the Amazing Technicolor Dreamcoat" running from May 26 to June 7; "Legally Blonde, The Musical" June 9 to 14; "Swing!" June 20 to 26; "Les Miserables" July 7 to 19; "Barry Manilow's Copacabana" July 21 to Aug. 2, and "Into the Woods" Aug. 4 to 9.Tickets start at $18.50. Half-price tickets to select performances of "Joseph and the Amazing Technicolor Dreamcoat" are available for children 3 to 14.Call 412-456-6666 or visit the Web site, www.pittsburghCLO.org.