diff --git a/src/backend/common/ConfigManager.ts b/src/backend/common/ConfigManager.ts
index 1edecc2779..45ecd23737 100644
--- a/src/backend/common/ConfigManager.ts
+++ b/src/backend/common/ConfigManager.ts
@@ -155,6 +155,35 @@ const migrations: [string, (store: Record<string, unknown>) => unknown][] = [
       }
     },
   ],
+  [
+    ">=0.20",
+    (config) => {
+      // プロジェクト読み込み → プロジェクトを読み込む
+      const hotkeySettings =
+        config.hotkeySettings as ConfigType["hotkeySettings"];
+      const newHotkeySettings: ConfigType["hotkeySettings"] =
+        hotkeySettings.map((hotkeySetting) => {
+          /// @ts-expect-error 名前変更なので合わない。
+          if (hotkeySetting.action === "プロジェクト読み込み") {
+            return {
+              ...hotkeySetting,
+              action: "プロジェクトを読み込む",
+            };
+          }
+          /// @ts-expect-error 名前変更なので合わない。
+          if (hotkeySetting.action === "テキスト読み込む") {
+            return {
+              ...hotkeySetting,
+              action: "テキストを読み込む",
+            };
+          }
+          return hotkeySetting;
+        });
+      config.hotkeySettings = newHotkeySettings;
+
+      return config;
+    },
+  ],
 ];
 
 export type Metadata = {
diff --git a/src/components/Menu/MenuBar/MenuBar.vue b/src/components/Menu/MenuBar/MenuBar.vue
index 8e7b072171..cd1bf1d60e 100644
--- a/src/components/Menu/MenuBar/MenuBar.vue
+++ b/src/components/Menu/MenuBar/MenuBar.vue
@@ -49,6 +49,8 @@ const store = useStore();
 const { registerHotkeyWithCleanup } = useHotkeyManager();
 const currentVersion = ref("");
 
+const audioKeys = computed(() => store.state.audioKeys);
+
 // デフォルトエンジンの代替先ポート
 const defaultEngineAltPortTo = computed<number | undefined>(() => {
   const altPortInfos = store.state.altPortInfos;
@@ -316,7 +318,7 @@ const menudata = computed<MenuItemData[]>(() => [
       },
       {
         type: "button",
-        label: "プロジェクト読み込み",
+        label: "プロジェクトを読み込む",
         onClick: () => {
           importProject();
         },
@@ -360,6 +362,18 @@ const menudata = computed<MenuItemData[]>(() => [
         disabled: !canRedo.value,
         disableWhenUiLocked: true,
       },
+      {
+        type: "button",
+        label: "全セルを選択",
+        onClick: async () => {
+          if (!uiLocked.value) {
+            await store.dispatch("SET_SELECTED_AUDIO_KEYS", {
+              audioKeys: audioKeys.value,
+            });
+          }
+        },
+        disableWhenUiLocked: true,
+      },
       ...props.editSubMenuData,
     ],
   },
@@ -506,7 +520,7 @@ registerHotkeyForAllEditors({
 });
 registerHotkeyForAllEditors({
   callback: importProject,
-  name: "プロジェクト読み込み",
+  name: "プロジェクトを読み込む",
 });
 </script>
 
diff --git a/src/components/Talk/TalkEditor.vue b/src/components/Talk/TalkEditor.vue
index d4c09df286..0e1064fd69 100644
--- a/src/components/Talk/TalkEditor.vue
+++ b/src/components/Talk/TalkEditor.vue
@@ -187,7 +187,7 @@ registerHotkeyWithCleanup({
 });
 registerHotkeyWithCleanup({
   editor: "talk",
-  name: "テキスト読み込む",
+  name: "テキストを読み込む",
   callback: () => {
     if (!uiLocked.value) {
       store.dispatch("SHOW_CONNECT_AND_EXPORT_TEXT_DIALOG");
@@ -246,6 +246,18 @@ registerHotkeyWithCleanup({
     }
   },
 });
+registerHotkeyWithCleanup({
+  editor: "talk",
+  enableInTextbox: false,
+  name: "全セルを選択",
+  callback: () => {
+    if (!uiLocked.value) {
+      store.dispatch("SET_SELECTED_AUDIO_KEYS", {
+        audioKeys: audioKeys.value,
+      });
+    }
+  },
+});
 
 const removeAudioItem = async () => {
   if (activeAudioKey.value == undefined) throw new Error();
diff --git a/src/type/preload.ts b/src/type/preload.ts
index 21c92b6d72..ba0c283c91 100644
--- a/src/type/preload.ts
+++ b/src/type/preload.ts
@@ -137,11 +137,11 @@ export const defaultHotkeySettings: HotkeySettingType[] = [
     combination: HotkeyCombination(!isMac ? "Ctrl S" : "Meta S"),
   },
   {
-    action: "プロジェクト読み込み",
+    action: "プロジェクトを読み込む",
     combination: HotkeyCombination(!isMac ? "Ctrl O" : "Meta O"),
   },
   {
-    action: "テキスト読み込む",
+    action: "テキストを読み込む",
     combination: HotkeyCombination(""),
   },
   {
@@ -172,6 +172,10 @@ export const defaultHotkeySettings: HotkeySettingType[] = [
     action: "選択解除",
     combination: HotkeyCombination("Escape"),
   },
+  {
+    action: "全セルを選択",
+    combination: HotkeyCombination(!isMac ? "Ctrl Shift A" : "Meta Shift A"),
+  },
 ];
 
 export const defaultToolbarButtonSetting: ToolbarSettingType = [
@@ -449,8 +453,8 @@ export const hotkeyActionNameSchema = z.enum([
   "新規プロジェクト",
   "プロジェクトを名前を付けて保存",
   "プロジェクトを上書き保存",
-  "プロジェクト読み込み",
-  "テキスト読み込む",
+  "プロジェクトを読み込む",
+  "テキストを読み込む",
   "全体のイントネーションをリセット",
   "選択中のアクセント句のイントネーションをリセット",
   "コピー",
@@ -458,6 +462,7 @@ export const hotkeyActionNameSchema = z.enum([
   "貼り付け",
   "すべて選択",
   "選択解除",
+  "全セルを選択",
 ]);
 
 export type HotkeyActionNameType = z.infer<typeof hotkeyActionNameSchema>;