diff --git a/morituri/common/program.py b/morituri/common/program.py
index cc28bda..eb004b0 100644
--- a/morituri/common/program.py
+++ b/morituri/common/program.py
@@ -46,6 +46,7 @@ class DiscMetadata(object):
     @type  release: unicode
     """
     artist = None
+    sortName = None
     title = None
     various = False
     tracks = None