diff --git a/routes/services/invisiblepuzzle/invisiblepuzzle.js b/routes/services/invisiblepuzzle/invisiblepuzzle.js
index 347cc59c9cbbeac56876e39b9f2f42368d97b15a..61df7c5c6590fafc417c9a0b14d1347f1e1624d5 100644
--- a/routes/services/invisiblepuzzle/invisiblepuzzle.js
+++ b/routes/services/invisiblepuzzle/invisiblepuzzle.js
@@ -296,6 +296,49 @@ router.get('/explorations/hpbylevel', function(req, res, next) {
 
 });
 
+router.get('/sonifications/bylevel', function(req, res, next) {
+
+    var collection = icarusDb.collection('resources');
+
+    var cursor = collection.aggregate(
+
+        // Pipeline
+        [
+            // Stage 1
+            {
+                $match: {
+                    "appdata.appname" : "Invisible Puzzle",
+                    "userdata.event" : "exploration",
+                    "debug" : false
+                }
+            },
+
+            // Stage 2
+            {
+                $project: {
+                    "identifier": {
+                        "lvl": "$userdata.level.id",
+                        "son": "$userdata.sonification"
+                    }
+                }
+            },
+
+            // Stage 3
+            {
+                $group: {
+                    "_id": "$identifier",
+                    "count": {$sum: 1}
+                }
+            }
+
+        ]
+
+    );
+
+    return_cursor(cursor, req, res, next);
+
+});
+
 function return_cursor(cursor, req, res, next){
 
     cursor.toArray(function(err, result) {