Butler County Community CollegeThe annual Holiday Pops concert by the Pittsburgh Philharmonic will be at 8 p.m. Friday in the Succop Theater. Tickets are $15.Call the theater box office from 10 a.m. to 2 p.m. Mondays through Fridays at 724-284-8505 or visit bc3.edu/Succop-theater.

Westminster College• The Celebrity Series will present tenor David Phelps performing Christmas songs from both past and present at 7:30 p.m. Monday in Orr Auditorium. Tickets start at $39. Send e-mail to gibg@westminster.edu or call 724-946-7354.• Westminster’s planetarium is presenting “Let it Snow: Holiday Music Magic,” recommended for all ages, at 5 and 8 p.m. Saturday, and “Mystery of the Christmas Star,” recommended for age 8 and older, at 6:30 p.m. Saturday. Admission is free but registration is required at www.westminster.edu/planetarium or by calling 724-946-7827.