Update app.py

app.py

@@ -114,11 +114,14 @@ def render_midi(input_midi, render_type, soundfont_bank, render_sample_rate, cus
         output_score = copy.deepcopy(fixed_score)
 
     elif render_type == "Transform":
-        output_score = copy.deepcopy(escore)
 
-        for e in output_score:
-            if e[3] != 9:
-                e[4] = (127 - e[4]) - 10
+        min_pitch = min([e[4] for e in escore if e[3] != 9])
+
+        fliped_score = [127 - e[4] if e[3] != 9 else e[4] for e in escore]
+
+        delta_min_pitch = min_pitch - min([e[4] for e in fliped_score if e[3] != 9])
+
+        output_score = [e[4]+delta_min_pitch if e[3] != 9 else e[4] for e in fliped_score]
 
     elif render_type == 'Repair':
         output_score = []