update

layout/includes/third-party/abcjs.pug

@@ -1,18 +0,0 @@
-script.
-    function abcjsInit() {
-        function abcjsFn() {
-            for (let abcContainer of document.getElementsByClassName("abc-music-sheet")) {
-                ABCJS.renderAbc(abcContainer, abcContainer.innerHTML, {responsive: 'resize'});
-            }
-        }
-        if (typeof ABCJS === 'object') {
-            abcjsFn();
-        } else {
-            getScript('!{url_for(theme.asset.abcjs_basic_js)}')
-                .then(() => {
-                    abcjsFn();
-                });
-        }
-    }
-
-    document.addEventListener('DOMContentLoaded', abcjsInit);

layout/includes/third-party/abcjs/abcjs.pug

@@ -0,0 +1,15 @@
+script.
+  (() => {
+    function abcjsInit() {
+      function abcjsFn() {
+        for (let abcContainer of document.getElementsByClassName("abc-music-sheet")) {
+          ABCJS.renderAbc(abcContainer, abcContainer.innerHTML, {responsive: 'resize'})
+        }
+      }
+      
+      typeof ABCJS === 'object' ? abcjsFn()
+        : getScript('!{url_for(theme.asset.abcjs_basic_js)}').then(abcjsFn)
+    }
+
+    window.pjax ? abcjsInit() : document.addEventListener('DOMContentLoaded', abcjsInit)
+  })()

layout/includes/third-party/abcjs/index.pug

@@ -0,0 +1,6 @@
+if theme.abcjs.enable
+  if theme.abcjs.per_page
+    if is_post() || is_page()
+      include ./abcjs.pug
+  else if page.abcjs
+    include ./abcjs.pug