The Baltimore Symphony Orchestra

system that provided safe, clean, energy-efficient radiant heat. Learn the story of the desperate German immigrants who fled dire conditions in Europe and came to prominence in Frederick County. Walk in for a guided tour.

$8 for adults, free for under age 12. 301456-4912. boycerensberger@gmail.com. fredericklandmarks.org.

Ghost Tours of Historic Frederick — 8 p.m. to 9:30 p.m. at Brewer’s Alley Restaurant and Brewery, 124 N. Market St., Frederick. Journey through Frederick’s gruesome and bloody past. Nearly 300 years of war, executions and revenge. True documented stories of the paranormal with Maryland’s oldest operating Ghost Tour. Uncover political savvy and defiant citizens, patriots from the Revolutionary War, beckoning soldiers from the Civil War. Reservations recommended. $15. 301-668-8922. info@marylandghosttours.com. marylandghosttours.com.

Festivals

Ice Cream Social & Book Sale — 9 a.m. to 2 p.m. at Blue Ridge Summit Free Library, 13676 Monterey Lane, Blue Ridge Summit, Pa. More than 6,000 books (adults, teens, kids), ice cream, food, drinks, bake sale, children’s activities, magic show, music, fire truck rides, face painting, artists and exhibitors, silent auction. 5K fun run begins at 8 a.m. No fee or awards. Register at 7:45 a.m. Proceeds from sales benefit the library. Parking at adjacent lots. 717-794-2240. brsmtnboard@gmail.com.

Annual Community Block Party — 11 a.m. to 3 p.m. at Asbury United Methodist Church, 101 W. All Saints St., Frederick. 100 block of West All Saints Street. Free food and school supplies, vendors, entertainment, kids’ activities, health screenings. community organizations and resources, 301-663-9380. asburyumcfmd.org.

Music

Jukebox Heroes Live! — 8 p.m. at Weinberg Center for the Arts, 20 W. Patrick St., Frederick. The Mahoney Brothers present “Jukebox Heroes Live.” featuring show-stopping impersonations of many of the legendary musical acts of the last 50 years, including tributes to The Beatles, Willie Nelson, Neil Diamond, Billy Joel, Roy Orbison, Jerry Lee Lewis and more! $25-$30. bhiller@cityoffrederickmd.gov. weinbergcenter.org/shows/ jukebox-heroes-live.

Theater

FTP Theater Presents “The 25th Annual Putnam County Spelling Bee” — 8 p.m. to 10:30 p.m. at New Spire Arts, 15 W. Patrick St., Frederick. Frederick’s Longest Running Community Theater, FtP, brings to the stage for six performances this hysterical musical. For mature audiences. $25. 240-315-3855. hello@ftptheater.com. ftptheater.com.