diff --git a/requirement.txt b/requirements.txt
similarity index 50%
rename from requirement.txt
rename to requirements.txt
index c5054b3..0afb431 100644
--- a/requirement.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
 mido
 pygame
-pygame.midi
diff --git a/tester.py b/tester.py
index dc3fc5c..19c557e 100755
--- a/tester.py
+++ b/tester.py
@@ -23,7 +23,7 @@ class Key:
 
 def read_midi(file):
     notes = []
-    notes_on = []
+    notes_on = {}
     s = 0
     for msg in MidiFile(file):
         d = msg.dict()