Village Harmony, the remarkable teen world-music ensemble, will present traditional songs from the Balkans and Georgia, American shape-note songs, arrangements of Yiddish music, and modern compositions in a family-friendly concert Tuesday, July 21, 7 p.m., Central Hall, 306 Falls Bridge Rd., Blue Hill. The group is led by Lysander Jaffe, Liam Kantor, and Lexi Ugelow. Admission is by donation at the door. www.villageharmony.org