Butler County Symphony Orchestra will feature an ensemble of harps at its concert Saturday in the Butler Intermediate High School auditorium, 551 Fairground Hill Road. “Visions of Sugar Plums” will begin at 7:30 p.m. Reserved seat tickets are available at the symphony association office, 259 S. Main St. Adult ticket prices are $22 in advance and $25 at the door. Student tickets are $5. Call 724-283-1402 or visit www.butlersymphony.org.

The Bach Society, under the direction of David Mruk, presents “Gloria” at 8 p.m. Friday at Center Presbyterian Church in Slippery Rock and at 8 p.m. Saturday at Tower Presbyterian Church in Grove City. Admission is free.

Trinity Jazz Orchestra will present a Christmas concert at 7 p.m. Monday at First English Lutheran Church, Main and Brady streets. Admission is free; an offering will be accepted.

“Tis the Season,” a choral and handbell concert featuring David English and a Circle of Friends Choirs, is set for 1 p.m. Saturday at Christ Community Methodist Church, 105 Duffy Road. Light refreshments will be served. Tickets are $10 and are available in advance or at the door. Proceeds will benefit the VNA Inpatient Hospice. Call 724-431-3352 for more information or to reserve tickets.

<B>Johnny Angel & The Halos </B>will present their Christmas oldies show at 8 p.m. Friday and Saturday at the Kean Theatre, 5847 Meridian Road. Tickets are $32. A dinner package is available at any Atria's Restaurant & Tavern with seating at 6 p.m. Cost of the dinner and concert package is $51 per ticket. To order, call 724-444-5326 or visit www.keantheatre.com.<B>Allegheny RiverStone Center for the Arts</B> will host a Christmas choral singalong at 2 p.m. Sunday in Lincoln Hall, 42 S. Palmer St., Foxburg. Donations will be accepted. Call 412-867-1816 or visit www.alleghenyriverstone.org.

<B>Greater Harmony Chorus</B> presents a “Winter Wonderland of Music,” a free Christmas concert to benefit The Network of Hope Give-A-Gift holiday program and the Lighthouse Mission. The concert will be at 3 p.m. Saturday at North Hills Junior High School, 55 Rochester Road. A donation of an unwrapped toy for children ages 2 to 18 and/or canned goods is requested. Monetary donations will also be accepted. For information, visit www.greaterharmony.org or call 724-613-9800.The 25th anniversary tour of the Christmas music of <B>Mannheim Steamroller </B>by Chip Davis will play at 8 p.m. Friday and Saturday at the Benedum Center, 719 Liberty Ave. Tickets range from $34.50 to $79.50 and are available by calling 412-456-6666 or online at www.pgharts.org.<B>River City Brass</B> will present a “Christmas Brasstacular” starting today and continuing through Dec. 12 at area locations. For information or to purchase tickets, visit www.rivercitybrass.org or call 412-434-7222.