St. William Parish will continue its free monthly concert series with a performance of “Stabat Mater” by Giovanni Battista Pergolesi on Sunday, March 18 at 2 p.m. in the lower church.

The concert will feature the Northeast Oratorio and Orchestra Societies of Philadelphia. Light refreshments will follow.

Admission is free. A goodwill offering will be taken up.

For more information, email or visit the concert series’ Facebook page.