Halloween Spooktacular promises "an afternoon of deliciously frightening fun and terrifying tales featuring the spooky sounds of orchestral favorites." Expect to hear the Cleveland Institute of Music Orchestra take on Saint-Saëns’s Danse macabre, Dukas’s The Sorcerer’s Apprentice and John Williams' tunes from Star Wars, Superman and Harry Potter. Costumes are encouraged and there's even a costume contest. The event begins at 3 p.m. at Severance Hall. Tickets are $15 to $30. (Niesel)