The sixth-annual Sacred Harp Singing Convention features singing of nondenominational hymns and gospel songs from 9:30 to 3 p.m., Saturday and Sunday, March 6 and 7. By donation. Tunebooks will be available on loan or may be purchased for $20. Potluck dinners take place at 12:30 p.m.; bring a covered dish to share. Call 743-1268, or visit www.tucsonfasola.org for more information.