The Grotto’s free concent series, Spring Alleluia!, opens tomorrow as we welcome the Portland Boychoir and Sacred Flight to the Chapel of Mary at 4:30 p.m. The event is free and everyone is welcome. (Guests are encouraged to bring two nonperishable food items to benefit St. Vincent de Paul.)

On Sunday, The Grotto welcomes The Madeleine Parish Choir at 3 p.m., and the Cantico Singers at 4 p.m.

The complete concert series schedule: