diff --git a/show/dance2013/song7.n3 b/show/dance2013/song7.n3
--- a/show/dance2013/song7.n3
+++ b/show/dance2013/song7.n3
@@ -8,5 +8,5 @@
 
 <http://light9.bigasterisk.com/show/dance2013/song7/subterm/0> a ns1:Subterm ;
     rdfs:label "" ;
-    ns1:expression "chan('rgb1-b')+chan('rgb2-b')" .
+    ns1:expression "" .