Columbia Association Group Fitness Expo Hosted by the Columbia Association. Highlighting CA's group fitness program, featuring a variety of popular fitness classes; door prizes and vendors. Registration required from 7 a.m. Sept. 24 to 10 p.m. Sept. 29. CA Package Plan Plus members can register online; other CA members and non-members may register by calling the Columbia Gym. All participants must bring a photo ID and check in at least 10 minutes before class. 7 a.m.-noon Oct. 1, Columbia Association Columbia Gym, 6151 Daylong Lane, Clarksville. Free. 410-531-0800.

Tom Thumbs Square Dance Club Beginner Classes Offering classes in Modern Western Square Dance. Open to all ages — families, singles and couples. Classes run every Monday, starting Sept. 12, through May 2012. Classes are held at the Catonsville Senior Center; regular dances are held at Hollifield Elementary School, in Ellicott City. 7:30-9:30 p.m. Oct. 3, Catonsville Senior Center, 501 N. Rolling Road, Catonsville. $6 per person, per week. 410-730-7326.

Howard County Legacy Leadership Institute for the Environment Information Night Holding an information night as part of recruitment for the 2012 Class of Legacy Leaders. An environmental education and volunteer leadership program for ages 50 and older who want to gain skills and knowledge and create a legacy through their volunteer work with partner organizations. Runs for six weeks, Mondays and Wednesdays, 9 a.m.-3:30 p.m., Feb. 1-March 14, followed by 150 hours of field placement with partner organizations from March through Sept. 2012. Field trips to significant local environmental sites are part of the program. 7-9 p.m. Oct. 4, Robinson Nature Center, 6692 Cedar Lane, Columbia. $50. 410-381-5279.

Lisbon Volunteer Fire Company Open House Learn how to protect you family from fire through hands-on activities and demonstrations. Featuring the Maryland State Police helicopter; demonstrations by Dino, the search and rescue dog, and Mae, the arson dog; dress up like a firefighter and get your picture taken with Sparky, the fire dog; and bring a stuffed animal and fix its injuries as an EMT in the ambulance. Learning opportunities available for all ages. Free snacks provided by Lisbon's Town Grill. 10 a.m.-2 p.m. Oct. 8, Lisbon Volunteer Fire C.o, 1330 Route 94, Lisbon. 410-489-4646.

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Brave Noise Performing jazz-rock music. 8:30-10:30 p.m. Sept. 29, Great Sage, 5809 Clarksville Square Drive, Columbia. 443-535-9400.

Ying String Quartet The Candlelight Concert Society presents the Ying String Quartet, performing Mozart: Quartet in E-flat Major, K. 428; Paul Moravec: Anniversary Dances; John Novacek: Three Rags for String Quartet; and Smetana: Quartet No. 1 in E minor, "From My Life." 8 p.m. Oct. 1, Alfred J. Smith Jr. Theater, 10901 Little Patuxent Parkway Howard Community College, Columbia. Adults: $30, seniors: $28, ages 9-24: $12; one free child, ages 9-17, with one paid adult or senior ticket. 410-997-2324.

Sundays At Three Chamber Music Series Opens its 15th season with the Mendelssohn Piano Trio, artists-in-residence of Washington's Embassy Series, which will perform Haydn's Trio in E-flat major, Brahms' Trio No. 3 in C minor, and Schubert's Trio No. 2 in E-flat major. 3 p.m. Oct. 2, Christ Episcopal Church, 6800 Oakland Mills Road, Columbia. Adults: $15; ages 17 and younger: free when accompanied by adult. 443-288-3179.

St. Louis Church Concert Series: "Keeping it Close to Home" Featuring musicians from Howard County churches, with Paul J. Carroll, Dave Foley, Stephen Lay, Berta Sabrio and Larissa Sanders. 4 p.m. Oct. 2, St Louis Catholic Church, 12500 State Route 108, Clarksville. Free. 410-531-6040.

Savage Bluegrass 7 p.m. Oct. 4, Sam and Elsie's Bar and Restaurant, 9994 Washington Blvd. N., Laurel. 301-317-7797.

St. Louis Church Concert Series: LYRA The St. Louis Church Concert Series presents LYRA, the Russian Vocal Ensemble of St. Petersburg, with Paul J. Carroll, organ. 7:30 p.m. Oct. 8, St Louis Catholic Church, 12500 State Route 108, Clarksville. Free. 410-531-6040.


Rake and Take Program Sponsored by the University of Maryand Extension. The Howard County Master Gardeners are hosting a program for those who rake and bag their leaves and would like someone else to pick them up. Email with your address and telephone number to become a part of the program. Participants will be contacted in the fall to arrange a pickup. 410-313-2707.

Kings Contrivance Village Fall Open Space Clean-up Participants should sign in at Amherst House in Kings Contrivance Village Center and can enter a drawing for gift certificates. 10 a.m.-1 p.m. Oct. 1, Amherst House, 7251 Eden Brook Drive, Columbia. 410-381-9600.

Howard County Iron Bridge Hounds Hosted by Sharp's at Waterford Farm. Presents the Howard County Iron Bridge Hounds, who will ride the farm. Visitors should bring binoculars to catch the spectacular view of hounds, horses, riders and hunt master as the traditional fox chase rides the countryside. Also featuring hayrides to the pumpkin fields. 11 a.m. Oct. 1, Sharp's at Waterford Farm, 4003 Jennings Chapel Road, Brookeville. 410-489-2572.

Light the Night Walk Sponsored by the Leukemia and Lymphoma Society. Presents the Light the Night Walk, which funds lifesaving research and support for people battling blood cancers. No fitness requirements. Individuals can walk individually or as part of a team; make a donation online; or become a volunteer or sponsor/partner. Walk begins at dusk. Every walker is encouraged to raise $100. 5 p.m. Oct. 1, Maple Lawn Home, 7600 Maple Lawn Blvd., Fulton. 443-471-1611.

Zombie Apocalypse Survival Training Hosted by Terrapin Adventures. To benefit Family and Children's Services of Howard County. Presents three sessions for participants to navigate challenges that test their endurance, agility, strength, courage and accuracy as "zombies" chase them through woods and obstacle courses, up climbing towers and on the ziplines. Participants must be at least 8-years-old, 70 pounds and 48" tall. 10 a.m.-2 p.m., noon-4 p.m., 2-6 p.m. Oct. 2, Terrapin Adventures, 8600 Foundry St., Savage. $75. 301-725-1313.

Pedal and Pick Your Own Hosted by Terrapin Adventures. Featuring a two-hour, 13.3-mile guided bike tour, beginning and ending at Larriland Farms, with the opportunity for participants to pick berries, apples and vegetables on their nearly 80 acres. Price does not include the purchase of fruit picked. Bikes, helmets and water provided. For ages 12 and older; must be at least 5 ft. tall. Children ages 18 and younger must be accompanied by an adult. Participants can bring their own bike for the tour for $25. Minimum tour size of six people and maximum of 12. Oct. 8, Terrapin Adventures, 8600 Foundry St., Savage. $49.95. 301-725-1313.

Maryland Native Tree Tour Through Fall-Hued Woods Presented by the Washington Suburban Sanitary Commission. Certified (and long-time) arborist Doug Sievers will share his knowledge and enthusiasm about Maryland's native trees during an easy walk through the Patuxent. 9 a.m.-noon Oct. 9, Pig Tail Recreation Area, 5600 Green Bridge Road, Dayton. Free. 301-206-8233.


Blessing of the Animals Sponsored by St. Andrew's Episcopal Church of Glenwood. Presents the celebration of St. Francis Day with the Blessing of the Animals. Attendees should bring their haltered or leashed pet by the barn for the animal parade to the blessing and short prayer service led by Dina van Klaveren. Open to the public. 4 p.m. Oct. 2, Sharp's at Waterford Farm, 4003 Jennings Chapel Road, Brookeville. Free; donations accepted. 410-489-2572.

Mini Church Service for Seniors Held every second and fourth Saturday of the month through December. Volunteers needed for music. 2:15-3:15 p.m. Oct. 8, 6334 Cedar Lane, Columbia. 410-908-7805.


Howard High School Multi-Year Reunion Howard High School classes of 1980 and 1981 will hold a combined 30-year reunion, featuring food, music and a photo booth. Spouses welcome to attend. 8 p.m.-1 a.m. Oct. 8, Elks Benevolent and Protective Order of Catonsville Lodge, 2832 Frederick Ave., Baltimore. $50.


Master Class with Tara Betts Hosted by the Howard County Poetry and Literature Society. Presents a poetry master class with Tara Betts, entitled "Minding the Stops, Minding the Line," on Oct. 4. Betts will join poet Terrance Hayes for an evening reading and discussion at "A Promise of Poetry," followed by a question and answer period, on Oct. 5. A reception, book sale and signing will follow. 7-8:30 p.m. Oct. 4, 7:30 p.m. Oct. 5, Howard Community College, 10901 Little Patuxent Pkwy., Columbia. Adults: $15; seniors and students with valid student ID: $10. 410-772-4800.


'The Promise of Poetry with Terrance Hayes and Tara Betts' Hosted by the Howard County Poetry and Literature Society. Opens its 37th season with The Lucille Clifton Poetry Series with "The Promise of Poetry with poets Terrance Hayes and Tara Betts." Contemporary poets Hayes and Betts will read and discuss their work followed by a question and answer period. A reception, book sale and signing will follow. 7:30 p.m. Oct. 5, 10901 Little Patuxent Pkwy., Columbia. General admission: $15; seniors and students with valid student ID: $10.

'Our Town' Performed by the Chesapeake Shakespeare Co. Presents'Our Town.' Directed by Founding Artistic Director, Ian Gallanar. 8 p.m. Oct. 7-8, 5 p.m. Oct. 9, Patapsco Female Institute And Historic Park, 3691 Sarahs Lane, Ellicott City. Thursdays and Fridays: $32 adults, $25 seniors, $15 students; Saturdays and Sundays: $36 adults, $25 seniors, $15 students. 410-313-8661.