The Maple Valley Youth Symphony Orchestra, combining with a community choir, will perform Vivladi’s “Gloria” in a concert at Shepherd of the Valley Lutheran Church this Friday at 7:30 p.m.

Vivaldi, a composer who also was a priest, music teacher, and virtuoso violinist, is thought to have written “Gloria” in Venice in 1715 for the choir of a girls’ orphanage that prided itself on its musical education. Almost 200 years after Vivaldi’s death, the piece was discovered in a pile of forgotten manuscripts. It presents the traditional Gloria from the Latin Mass in 12 cantata-like sections.

A suggested donation of $5 at the door at Friday’s concert will support music programs at Shepherd of the Valley and the youth symphony. More information is available at (425) 432-1373.

The symphony, which is under the direction of Margaret Young-Weitzel, formed in the fall of 2007.

The 30-member community choir, conducted by Ron Mallory, includes members of Shepherd of the Valley, where he is music director.