diff --git a/background_subtraction_heat.py b/background_subtraction_heat.py
index d712c07..62495b6 100644
--- a/background_subtraction_heat.py
+++ b/background_subtraction_heat.py
@@ -53,9 +53,9 @@ class RecordingGrouper:
         self.data = data
 
     def getRecordings(self):
-        for uc in self.data.use_cases():
-            for detection in data.detections(uc):
-                return detection.recordings()
+        for detection in data.detections(self.data.use_cases()):
+            for recording in detection.recordings():
+                yield recording
 
     def getRecordingGroups(self):
         groups = []