Bach Society’s spring choral concert “Rest from the Journey” will be performed Friday at Center Presbyterian Church, 211 Center St., Slippery Rock, and Saturday at Tower Presbyterian Church, 248 S. Broad St., Grove City. Both will begin at 7:30 p.m. The Grove City High School Chamber Choir will join in the Saturday performance. Admission is free.

Harmony in the House will have a performance by Eric Brace and Peter Cooper at 7 p.m. Friday at Bottlebrush: A Gallery for the Arts, 539 Main St., Harmony. Admission is $15. Call 724-452-0539 for reservations.