diff --git a/src/menu/editor.js b/src/menu/editor.js
index 6daaa51..13bb9d6 100644
--- a/src/menu/editor.js
+++ b/src/menu/editor.js
@@ -130,6 +130,12 @@ const handleKeyPress = wrappedAction((ev) => {
       case isNote(inputKey) && !ctrl && !shift:
         notation.note = inputKey;
         break;
+      case inputKey === "(" && !ctrl:
+        notation.note = N.crackerOpen;
+        break;
+      case inputKey === ")" && !ctrl:
+        notation.note = N.crackerClose;
+        break;
       case inputKey === "-" && !ctrl && !shift:
         notation.note = N.extend;
         break;
diff --git a/src/util/notation.js b/src/util/notation.js
index 50cc285..e5a889e 100644
--- a/src/util/notation.js
+++ b/src/util/notation.js
@@ -11,6 +11,8 @@ const notations = {
   si: "7",
   extend: "─",
   separator: "│",
+  crackerOpen: "（",
+  crackerClose: ")"
 };
 const notes = [
   notations.zero,