Update constants.py

constants.py

@@ -84,6 +84,7 @@ GM_INSTRUMENTS = [
     "Ocarina",
     "Lead 1 (square)",
     "Lead 2 (sawtooth)",
+    "Lead 3 (calliope)",
     "Lead 4 (chiff)",
     "Lead 5 (charang)",
     "Lead 6 (voice)",
@@ -102,8 +103,12 @@ GM_INSTRUMENTS = [
     "FX 3 (crystal)",
     "FX 4 (atmosphere)",
     "FX 5 (brightness)",
+    "FX 6 (goblins)",
     "FX 7 (echoes)",
     "FX 8 (sci-fi)",
+    "Sitar",
+    "Banjo",
+    "Shamisen",
     "Koto",
     "Kalimba",
     "Bagpipe",
@@ -124,4 +129,5 @@ GM_INSTRUMENTS = [
     "Telephone Ring",
     "Helicopter",
     "Applause",
-]
+    "Gunshot",
+]