diff --git a/assets/js/creations/file.js b/assets/js/creations/file.js
index c6f3ff3..e31e345 100644
--- a/assets/js/creations/file.js
+++ b/assets/js/creations/file.js
@@ -67,14 +67,9 @@ export async function parseMmpContent(xmlString) {
     const totalSteps = getTotalSteps();
     const newSteps = new Array(totalSteps).fill(false);
     
-    // ==================================================================
-    // (CORREÇÃO DEFINITIVA)
-    // 1. Simplificamos o cálculo: cada step de 1/16 vale 12 ticks.
     const ticksPerStep = 12;
 
-    // 2. Buscamos TODAS as notas da trilha, não importa em qual pattern elas estejam.
     trackNode.querySelectorAll("note").forEach((noteNode) => {
-    // ==================================================================
       const pos = parseInt(noteNode.getAttribute("pos"), 10);
       const stepIndex = Math.round(pos / ticksPerStep);
       if (stepIndex < totalSteps) {
@@ -205,21 +200,11 @@ function modifyAndSaveExistingMmp() {
 function createTrackXml(track) {
   if (!track.samplePath) return "";
   const totalSteps = track.steps.length || getTotalSteps();
-  const ticksPerStep = 12; // Valor fixo de 12 ticks por step de 1/16
+  const ticksPerStep = 12; 
   const lmmsVolume = Math.round(track.volume * 100);
   const lmmsPan = Math.round(track.pan * 100);
   const sampleSrc = track.samplePath.replace("src/samples/", "");
-  const notesXml = track.steps
-    .map((isActive, index) => {
-      if (isActive) {
-        const notePos = Math.round(index * ticksPerStep);
-        return `<note vol="100" len="${NOTE_LENGTH}" pos="${notePos}" pan="0" key="57"/>`;
-      }
-      return "";
-    })
-    .join("\n                ");
 
-  // Cria um pattern para cada compasso (16 steps)
   let patternsXml = '';
   const stepsPerBar = 16;
   const numBars = Math.ceil(totalSteps / stepsPerBar);
diff --git a/assets/js/creations/ui.js b/assets/js/creations/ui.js
index 8fdfdef..a490d56 100644
--- a/assets/js/creations/ui.js
+++ b/assets/js/creations/ui.js
@@ -13,7 +13,7 @@ import { loadProjectFromServer } from "./file.js";
 // Variável para armazenar o mapa de samples (nome do arquivo -> caminho completo)
 let samplePathMap = {};
 
-// Função para exportar o mapa de samples para outros módulos
+// Função para exportar o mapa de samples, que estava faltando
 export function getSamplePathMap() {
   return samplePathMap;
 }
@@ -60,7 +60,7 @@ export function renderApp() {
                     <span>PAN</span>
                 </div>
             </div>
-            <div class="step-sequencer"></div>
+            <div class="step-sequencer-wrapper"></div>
         `;
 
     trackLane.addEventListener("dragover", (e) => {
@@ -93,13 +93,24 @@ export function renderApp() {
 }
 
 export function redrawSequencer() {
-  const beatsPerBar =
-    parseInt(document.getElementById("compasso-a-input").value, 10) || 4;
+  const beatsPerBar = parseInt(document.getElementById("compasso-a-input").value, 10) || 4;
+  const noteValue = parseInt(document.getElementById("compasso-b-input").value, 10) || 4;
+  const subdivisions = Math.round(16 / noteValue);
+  const stepsPerBar = beatsPerBar * subdivisions;
   const totalSteps = getTotalSteps();
-  document.querySelectorAll(".step-sequencer").forEach((container) => {
-    const parentTrackElement = container.closest(".track-lane");
+
+  document.querySelectorAll(".step-sequencer-wrapper").forEach((wrapper) => {
+    let sequencerContainer = wrapper.querySelector(".step-sequencer");
+    if (!sequencerContainer) {
+      sequencerContainer = document.createElement("div");
+      sequencerContainer.className = "step-sequencer";
+      wrapper.appendChild(sequencerContainer);
+    }
+    
+    const parentTrackElement = wrapper.closest(".track-lane");
     const trackId = parentTrackElement.dataset.trackId;
     const trackData = appState.tracks.find((t) => t.id == trackId);
+
     if (trackData && trackData.steps.length !== totalSteps) {
       const newStepsState = new Array(totalSteps).fill(false);
       for (let i = 0; i < Math.min(trackData.steps.length, totalSteps); i++) {
@@ -107,10 +118,12 @@ export function redrawSequencer() {
       }
       trackData.steps = newStepsState;
     }
-    container.innerHTML = "";
+
+    sequencerContainer.innerHTML = "";
     for (let i = 0; i < totalSteps; i++) {
       const stepWrapper = document.createElement("div");
       stepWrapper.className = "step-wrapper";
+
       const stepElement = document.createElement("div");
       stepElement.className = "step";
       if (trackData && trackData.steps[i] === true) {
@@ -123,27 +136,29 @@ export function redrawSequencer() {
           playSample(trackData.samplePath, trackData.id);
         }
       });
+
       const groupIndex = Math.floor(i / beatsPerBar);
       if (groupIndex % 2 === 0) {
         stepElement.classList.add("step-dark");
       }
-      if (i > 0 && i % beatsPerBar === 0) {
+
+      if (i > 0 && i % stepsPerBar === 0) {
         const marker = document.createElement("div");
         marker.className = "step-marker";
-        marker.textContent = i;
+        marker.textContent = Math.floor(i / stepsPerBar) + 1;
         stepWrapper.appendChild(marker);
       }
+      
       stepWrapper.appendChild(stepElement);
-      container.appendChild(stepWrapper);
+      sequencerContainer.appendChild(stepWrapper);
     }
   });
 }
 
-// LÓGICA DE INTERAÇÃO DOS KNOBS
 function addKnobInteraction(knobElement) {
     const controlType = knobElement.dataset.control;
     knobElement.addEventListener("mousedown", (e) => {
-      if (e.button === 1) { // Middle mouse button
+      if (e.button === 1) {
           e.preventDefault();
           const trackId = knobElement.dataset.trackId;
           const defaultValue = controlType === "volume" ? 0.8 : 0.0;
@@ -156,7 +171,7 @@ function addKnobInteraction(knobElement) {
       }
     });
     knobElement.addEventListener("mousedown", (e) => {
-      if (e.button !== 0) return; // Apenas botão esquerdo
+      if (e.button !== 0) return;
       e.preventDefault();
       const trackId = knobElement.dataset.trackId;
       const track = appState.tracks.find((t) => t.id == trackId);
@@ -249,7 +264,6 @@ export function highlightStep(stepIndex, isActive) {
   });
 }
 
-// LÓGICA DA SIDEBAR E MODAL
 export async function loadAndRenderSampleBrowser() {
   const browserContent = document.getElementById("browser-content");
   try {