The world famous Nidaros Cathedral Boys Choir from Trondheim, Norway will appear on Thursday, February 20 in the nave at 7:00 p.m. The Nidaros Cathedral Boys Choir is the oldest boys choir in Norway and represents a 900 year long tradition of boy singers in the Nidaros Cathedral. The present choir consists of 50 boy singers ages 9-13 and 25 men singers who were formerly members of the boys choir.