diff --git a/assets/js/creations/file.js b/assets/js/creations/file.js
index a85c6968..6cd1f556 100755
--- a/assets/js/creations/file.js
+++ b/assets/js/creations/file.js
@@ -742,13 +742,13 @@ export function syncPatternStateToServer() {
   const currentXml = generateXmlFromState();
   sendAction({ type: "SYNC_PATTERN_STATE", xml: currentXml });
   saveStateToSession();
-
+}
 
 function ensureBbTrackCount(xmlDoc, neededCount) {
   const songTc = xmlDoc.querySelector("song > trackcontainer");
   if (!songTc) return;
 
-  let bbTracks = Array.from(songTc.querySelectorAll(':scope > track[type="1"]'));
+  const bbTracks = Array.from(songTc.querySelectorAll(':scope > track[type="1"]'));
   if (bbTracks.length === 0) return;
 
   const template = bbTracks[bbTracks.length - 1];
@@ -756,21 +756,19 @@ function ensureBbTrackCount(xmlDoc, neededCount) {
   while (bbTracks.length < neededCount) {
     const clone = template.cloneNode(true);
 
-    // limpa blocos
+    // limpa os clips (bbtco) do clone (opcional, mas bom)
     Array.from(clone.querySelectorAll(":scope > bbtco")).forEach((n) => n.remove());
 
-    // deixa o container interno “limpo” (opcional)
-    const inner = clone.querySelector('bbtrack > trackcontainer');
-    if (inner) inner.querySelectorAll('track[type="0"]').forEach((n) => n.remove());
+    // ⚠️ Eu recomendo NÃO remover instrumentos internos aqui,
+    // senão o bbtrack clonado pode ficar mudo no LMMS.
+    // (Então NÃO faça: inner.querySelectorAll('track[type="0"]').remove())
 
-    // nome default
-    clone.setAttribute("name", `Beat/Bassline ${bbTracks.length}`);
+    clone.setAttribute("name", `Beat/Bassline ${bbTracks.length + 1}`);
 
     songTc.appendChild(clone);
     bbTracks.push(clone);
   }
 }
-}
 
 function applyPlaylistClipsToXml(xmlDoc) {
   const basslines = appState.pattern.tracks
@@ -781,7 +779,10 @@ function applyPlaylistClipsToXml(xmlDoc) {
   const maxIdx = Math.max(-1, ...basslines.map((b) => Number(b.patternIndex)));
   ensureBbTrackCount(xmlDoc, maxIdx + 1);
 
-  const bbTrackNodes = Array.from(xmlDoc.querySelectorAll('track[type="1"]'));
+  const bbTrackNodes = Array.from(
+    xmlDoc.querySelectorAll('song > trackcontainer > track[type="1"]')
+  );
+
   if (!bbTrackNodes.length) return;
 
   for (const b of basslines) {