diff --git a/src/spectrogram.c b/src/spectrogram.c
index 824cd90..e731a19 100644
--- a/src/spectrogram.c
+++ b/src/spectrogram.c
@@ -102,6 +102,10 @@ typedef struct {
     bool loaded;
     bool stftComputed;
 
+    // Playback state
+    float playheadT;           // 0-1 normalized position in selection
+    float playheadElapsed;     // Elapsed seconds since play started
+
     // Time selection (0-1 normalized)
     float timeSelectionStart;
     float timeSelectionEnd;
@@ -1238,6 +1242,28 @@ static void DrawSelectionDrag(Rectangle bounds)
     DrawRectangleLinesEx((Rectangle){ x, y, w, h }, 2, YELLOW);
 }
 
+// ============================================================================
+// Playhead
+// ============================================================================
+
+static void DrawPlayhead(Rectangle bounds)
+{
+    if (!app.isPlaying || app.playheadT < 0.0f || app.playheadT > 1.0f) return;
+
+    float timePos = app.timeSelectionStart + app.playheadT * (app.timeSelectionEnd - app.timeSelectionStart);
+    float viewWidth = app.viewEnd - app.viewStart;
+    float t = (timePos - app.viewStart) / viewWidth;
+    float x = bounds.x + t * bounds.width;
+
+    // Clamp to bounds
+    x = fmaxf(bounds.x, fminf(bounds.x + bounds.width, x));
+
+    // Draw vertical line
+    DrawLine(x, bounds.y, x, bounds.y + bounds.height, RED);
+    // Draw semi-transparent overlay to make it stand out
+    DrawRectangle(x - 2, bounds.y, 4, bounds.height, (Color){ 255, 0, 0, 60 });
+}
+
 // ============================================================================
 // PNG Export
 // ============================================================================
@@ -1416,6 +1442,8 @@ static void DrawSidebar(void)
         if (app.isPlaying && AudioPlaybackSound.frameCount > 0) {
             StopSound(AudioPlaybackSound);
             app.isPlaying = false;
+            app.playheadElapsed = 0;
+            app.playheadT = 0;
         } else {
             PlaySelectedRegion();
             app.isPlaying = true;
@@ -1665,6 +1693,12 @@ int main(int argc, char* argv[])
                 app.isPlaying = false;
                 app.playbackFinished = true;
             }
+            // Track playhead position manually
+            app.playheadElapsed += GetFrameTime();
+            float selectionDuration = (app.timeSelectionEnd - app.timeSelectionStart) * app.signal.duration;
+            if (selectionDuration > 0) {
+                app.playheadT = app.playheadElapsed / selectionDuration;
+            }
         }
 
         // Handle window resize
@@ -1828,6 +1862,8 @@ int main(int argc, char* argv[])
                 StopSound(AudioPlaybackSound);
                 app.isPlaying = false;
                 app.playbackFinished = false;
+                app.playheadElapsed = 0;
+                app.playheadT = 0;
             } else if (app.playbackFinished) {
                 // Playback finished naturally - restart from beginning
                 PlaySelectedRegion();
@@ -2233,6 +2269,7 @@ int main(int argc, char* argv[])
             if (app.showGrid) DrawSpectrogramGrid(viewBounds, 10, 8, Fade(GRAY, 0.3f));
             DrawSelection(viewBounds);
             DrawSelectionDrag(viewBounds);
+            DrawPlayhead(viewBounds);
             DrawLabels(viewBounds);
             float maxFreq = (float)app.signal.sampleRate / 2.0f;
             float freqMin = app.freqViewStart * maxFreq;