On Friday, September 15 at 8 p.m., the Princeton Folk Music Society presents Castlebay, its first concert of the 2023-24 season. Live at Christ Congregation Church and also livestreamed, the duo of Julia Lane and Fred Gosbee weave together the music of New England and the Celtic lands on Celtic harp, guitar, fiddle, and tin whistle. The church is at 50 Walnut Lane. Tickets are $5-$25. Masks are required. Visit princetonfolk.org for more information. (Photo courtesy of Castlebay@Castlebay)