diff --git a/customizations/mei-Neumes.xml b/customizations/mei-Neumes.xml
index e2b43387a..6d9a3c5e6 100644
--- a/customizations/mei-Neumes.xml
+++ b/customizations/mei-Neumes.xml
@@ -127,6 +127,18 @@
             <memberOf key="model.rdgPart.critapp"/>
           </classes>
         </classSpec>
+        
+        <!-- Allow custos and clef to appear within layer; compensate side effect of removing membership in model.layerPart from model.eventLike -->
+        <elementSpec ident="custos" module="MEI.shared" mode="change">
+          <classes mode="change">
+            <memberOf key="model.layerPart.neumes" mode="add"/>
+          </classes>
+        </elementSpec>
+        <elementSpec ident="clef" module="MEI.shared" mode="change">
+          <classes mode="change">
+            <memberOf key="model.layerPart.neumes" mode="add"/>
+          </classes>
+        </elementSpec>
 
       </schemaSpec>
     </body>