PITTSBURGH — The Brown Chapel Heir Force presents "The Night Chaser," a Christmas celebration for all ages, at 7:30 p.m. Dec. 11 at the New Hazlett Theater, 6 Allegheny Square East on the North Side.

"The Night Chaser" is a story about a family who receives a video game that draws them into an adventure requiring courage and responsibility. The production includes music, acting, mime, dance and African drumming.

Tickets are free for children age 12 and younger when accompanied by an adult. Adult tickets are $10 for preferred seating and $5 for general admission. Call 412-471-4332.

Call 412-642-1800.

PITTSBURGH — Pittsburgh Opera will host a free Brown Bag Concert at noon Dec. 12 in the performance space of its Strip District headquarters at 2425 Liberty Ave.This one-hour concert will feature the resident artists of Pittsburgh Opera performing festive songs of the season for the entire family.Guests can take a lunch or preorder a gourmet boxed lunch by calling 412-454-6200.For more information, call 412-281-0912 or visit www.pittsburghopera.org.Future free Brown Bag Concerts are scheduled for Jan. 9, Feb. 13, March 13 and April 10.

FOXBURG — Allegheny RiverStone Center for the Arts at Lincoln Hall will be the site of a madrigal show with dinner and music in the medieval tradition at 7 p.m. Friday.Tickets are $35.A Mighty Wurlitzer Christmas Moment with Martin Ellis is set for 8 p.m. Dec. 5. Tickets are $25.Call 724-659-3116 or visit www.alleghenyriverstone.org.

HAMPTON TWP, Allegheny County — The annual Celebration of Lights on display now at Hartwood Acres, 215 Saxonburg Blvd., continues through Jan. 3.The 3.5-mile stretch of holiday light displays now in its 18th year benefits the Salvation Army and other Allegheny County charities.A $12 donation per carload is requested, or $5 per person for for-profit making buses and $3 per person for nonprofit buses and RVs.Event hours are 6 to 10 p.m. Sundays through Thursdays, and 6 to 11 p.m. Fridays and Saturdays. On Christmas Eve and New Year's Eve, event hours are from 6 to 10 p.m. More information is available at Web site at www.riteaid.com.

PITTSBURGH — The Sesame Street Live touring production "Elmo's Green Thumb" will be presented Jan. 13 to 17 at Mellon Arena.Songs will include "Ladybug Picnic" and "I Love Trash."Shows are scheduled for 7 p.m. Jan. 13 and 15; 10:30 a.m. and 7 p.m. Jan. 14; 10:30 a.m. and 2 and 5:30 p.m. Jan. 16, and 1 and 4:30 p.m. Jan. 17.Tickets are $13, $17 and $23 with a limited number of $30 gold circle and $75 sunny seats available. On opening night Jan. 13, all seats except gold circle and sunny seats are $12. Facility fees apply.

PITTSBURGH — Tickets for the musical "Cats" will go on sale at 9 a.m. Dec. 11.The show is scheduled to be at the Benedum Center, 719 Liberty Ave., from Jan. 26 to 31.Curtain is at 7:30 p.m. Jan. 26, 27 and 28, at 8 p.m. Jan. 29, at 2 and 8 p.m. Jan. 30, and at 1 and 6:30 p.m. Jan. 31.For more information, call 412-456-6666.