Female vocal ensemble Anonymous 4 performs during the Duke Festival for Medieval and Renaissance Music.

DURHAM, N.C. - The Duke Festival for Medieval and Renaissance Music celebrates period music Oct. 16-18.

Trefoil, a trio of modern-day medieval minstrels featuring a combination of harps, performs "In the Chamber of the Harpers: Late Medieval Music from the Iberian Peninsula" on Friday, Oct. 16. Musicologist Anne Stone of Queens College in New York will also give a lecture at 4 p.m. the same day in the Biddle Music Building.

The voices of the female vocal ensemble Anonymous 4 (left) will then resonate off the walls of Duke Chapel at 8 p.m. on Saturday, Oct. 17 during the performance "Secret Voices: The Sisters of Las Huelgas, Music of Thirteenth Century Spain." In addition, the group will hold a vocal master class at noon on Sunday, Oct. 18 in the East Duke Building.

For more information on tickets and locations for these events, visit music.duke.edu/events/medieval2009.php.