Union Presbyterian Church, 5637 Street Road, Kirkwood, will hold a Christmas organ concert and hymn sing on Sunday, Dec. 18, at 6:30 p.m. Organist Bob Trimble will perform on the church's restored 90-year-old United States pipe organ. Pianist Rick Rineer, a soloist, and a brass ensemble will join Trimble during the concert. A hymn sing-along will also take place.

Admission is free and open to everyone.