The angels attend the King of Kings, that is, to God the father in the central Deësis panel. Unusually, they lack most of the attributes usually associated with angels depicted in northern art of the time. They do not have wings, and their faces are unidealised, and show a number of different individual expressions. Music historian Stanley Boorman notes that their depiction contains many earthly qualities, writing that "the naturalism is so seductive that the viewer is tempted to consider the scenes as depictions of contemporary church music." Yet he concludes that the inscriptions "reinstalls them in the heavenly sphere". In both panels the angels stand on maiolica tiles decorated with the IHS Christogram, representations of the lamb and other images.