The Penn State Behrend Concert Choir and Chamber Singers will give two performances of "Stratosphere," their year-end concert program.

The first performance will be at 8 p.m. Saturday, April 25, in the Larry and Kathryn Smith Chapel on the Penn State Behrend campus. The next day, Sunday, April 26, the choirs will perform at 4 p.m. at the Cathedral of St. Paul Episcopal, 134 W. 7th St., Erie.