Filament, a Philadelphia-based chamber ensemble, will perform at First Presbyterian Church of Bethlehem, 2344 Center St., Bethlehem on Saturday, Nov. 9 at 3 p.m. Tickets are available at the door for $20 each. Mezzo-soprano Meg Bragle, who is a frequent soloist with the Bach Choir, will join the ensemble for this performance of 17th- and 18th-century chamber music. Filament was formed in 2019, and includes a core trio of violin, viola da gamba, and keyboards. Its founding members are Evan Few, Elena Kauffman, and John Walthausen.