Marching Band Competition, 4 p.m. at North Andover High School, 430 Osgood St. Seventeen high school marching bands will compete. There will also be a performance by the Boston University Marching Band. Concessions will be available. Admission is $8 for adults, $5 for students. Call 978-681-9915.
Parson Barnard House Tours, 11 a.m. to 3 p.m. at 179 Osgood St., North Andover. Includes tours, the herb and wildlife gardens and local history. Free admission. Call 978-590-4388.
Visit by Michael Tougias, 11 a.m. at the Langley-Adams Library, 185 Main St., Groveland. The award-winning author and lecturer will present his book, “A Storm Too Soon: A True Story of Disaster, Survival and an Incredible Rescue.” This event is free and open to the public. Visit langleyadamslib.org or call 978-372-1732 to register.
Meat Raffle, 2 to 4 p.m. at VFW Post 8349, 26 River St., Methuen. Hosted by the Methuen Ladies Auxiliary. Open to the public.
Sunday, Oct. 6
21st Annual “Trot for Special Tots,” 10 a.m. starting at The Professional Center for Child Development, 32 Osgood St., Andover. Registration begins at 9 a.m. Visit TheProfessionalCenter.org.
Free Concert, 2 p.m. at the Lawrence Public Library, 51 Lawrence St. Esther Ning-Yau and Eleanor Perrone will perform piano duets featuring the music of Bach, Dvorak, Gluck, Gottschalk, and Rachmaninov. The free concert is supported by the Catherine McCarthy Memorial Trust and the White Fund. A reception will follow the concert. Call 978-683-8222.
Service of Dedication, 3 p.m. at the Congregational Church, 61 Main St., Hampstead. In celebration of the installation of an additional set of organ pipes, an 8-foot Oboe, to the church’s pipe organ. The new stop will improve weekly Sunday services, organ literature, weddings and commemorative services by providing additional color, depth and enhance tonal resonance. Organist and Choir Director Stephen Laurie-Hermes will play organ music of J. S. Bach, Antonio Vivaldi and Charles Marie-Widor. There will be vocal solo music of Cesar Franck, hymns for congregation and choir, and the church choir will sing a festival anthem by Ralph Vaughan Williams. The public is most cordially invited to attend. A reception of light refreshments will follow the service.