Index: parse.py
==================================================================
--- parse.py
+++ parse.py
@@ -122,13 +122,14 @@
 
     def p_accidental(p):
         '''note : ACCIDENTAL note
         '''
         if p[1] == "^":
-            p[0] = p[2].value + 1
+            p[2].value += 1
         else:
-            p[0] = p[2].value - 1
+            p[2].value -= 1
+        p[0] = p[2]
 
     def p_octave(p):
         '''note : note OCTAVE
         '''
         count = len(p[2])

Index: spiffyscore.py
==================================================================
--- spiffyscore.py
+++ spiffyscore.py
@@ -19,11 +19,19 @@
 
 def main():
     composition = {
         "intro": {
             "body": {
-                "pan_flute": {  # Instrument 'melody'
+                "percusion": {
+                    "channel": 14,
+                    "octave": 4,
+                    "duration": 60,
+                    "grammars": {
+                        "u": ["A ^A (u)"]
+                    }
+                },
+                "pan_flute": {
                     "channel": 8,
                     "octave": 5,
                     "duration": 60,
                     "grammars": {  # Notes for this instrument to use in this piece
                         "u": ["C2' B2 | A3 D3 || B | C' | D | C2' C2' | z | (u)", "C2' C2' | C2' C2' | (x)"],