diff --git a/go_backend/tidal.go b/go_backend/tidal.go
index 5ed6eb1d..a8dbdac1 100644
--- a/go_backend/tidal.go
+++ b/go_backend/tidal.go
@@ -770,95 +770,6 @@ func getDownloadURLParallel(apis []string, trackID int64, quality string) (strin
 	return "", TidalDownloadInfo{}, fmt.Errorf("all %d Tidal APIs failed. Errors: %v", len(apis), errors)
 }
 
-// getDownloadURLSequential requests download URL from APIs sequentially (fallback)
-// Returns the first successful result (supports both v1 and v2 API formats)
-func getDownloadURLSequential(apis []string, trackID int64, quality string) (string, TidalDownloadInfo, error) {
-	if len(apis) == 0 {
-		return "", TidalDownloadInfo{}, fmt.Errorf("no APIs available")
-	}
-
-	client := NewHTTPClientWithTimeout(DefaultTimeout)
-	retryConfig := DefaultRetryConfig()
-	var errors []string
-
-	for _, apiURL := range apis {
-		reqURL := fmt.Sprintf("%s/track/?id=%d&quality=%s", apiURL, trackID, quality)
-		GoLog("[Tidal] Trying API: %s\n", reqURL)
-
-		req, err := http.NewRequest("GET", reqURL, nil)
-		if err != nil {
-			errors = append(errors, BuildErrorMessage(apiURL, 0, err.Error()))
-			continue
-		}
-
-		resp, err := DoRequestWithRetry(client, req, retryConfig)
-		if err != nil {
-			GoLog("[Tidal] API error: %v\n", err)
-			errors = append(errors, BuildErrorMessage(apiURL, 0, err.Error()))
-			continue
-		}
-
-		body, err := ReadResponseBody(resp)
-		resp.Body.Close()
-		if err != nil {
-			GoLog("[Tidal] Read body error: %v\n", err)
-			errors = append(errors, BuildErrorMessage(apiURL, resp.StatusCode, err.Error()))
-			continue
-		}
-
-		// Log response preview
-		bodyPreview := string(body)
-		if len(bodyPreview) > 300 {
-			bodyPreview = bodyPreview[:300] + "..."
-		}
-		GoLog("[Tidal] API response (HTTP %d): %s\n", resp.StatusCode, bodyPreview)
-
-		// Try v2 format first (object with manifest)
-		var v2Response TidalAPIResponseV2
-		if err := json.Unmarshal(body, &v2Response); err == nil && v2Response.Data.Manifest != "" {
-			GoLog("[Tidal] Got v2 response from %s - Quality: %d-bit/%dHz, AssetPresentation: %s\n",
-				apiURL, v2Response.Data.BitDepth, v2Response.Data.SampleRate, v2Response.Data.AssetPresentation)
-
-			// IMPORTANT: Reject PREVIEW responses - we need FULL tracks
-			if v2Response.Data.AssetPresentation == "PREVIEW" {
-				GoLog("[Tidal] ✗ Rejecting PREVIEW response from %s, trying next API...\n", apiURL)
-				errors = append(errors, BuildErrorMessage(apiURL, resp.StatusCode, "returned PREVIEW instead of FULL"))
-				continue
-			}
-
-			GoLog("[Tidal] ✓ Got FULL track from %s\n", apiURL)
-			info := TidalDownloadInfo{
-				URL:        "MANIFEST:" + v2Response.Data.Manifest,
-				BitDepth:   v2Response.Data.BitDepth,
-				SampleRate: v2Response.Data.SampleRate,
-			}
-			return apiURL, info, nil
-		}
-
-		// Fallback to v1 format (array with OriginalTrackUrl)
-		var v1Responses []struct {
-			OriginalTrackURL string `json:"OriginalTrackUrl"`
-		}
-		if err := json.Unmarshal(body, &v1Responses); err == nil {
-			for _, item := range v1Responses {
-				if item.OriginalTrackURL != "" {
-					// v1 format doesn't have quality info, assume 16-bit/44.1kHz
-					info := TidalDownloadInfo{
-						URL:        item.OriginalTrackURL,
-						BitDepth:   16,
-						SampleRate: 44100,
-					}
-					return apiURL, info, nil
-				}
-			}
-		}
-
-		errors = append(errors, BuildErrorMessage(apiURL, resp.StatusCode, "no download URL or manifest in response"))
-	}
-
-	return "", TidalDownloadInfo{}, fmt.Errorf("all %d Tidal APIs failed. Errors: %v", len(apis), errors)
-}
-
 // GetDownloadURL gets download URL for a track - tries ALL APIs in parallel
 // "Siapa cepat dia dapat" - first successful response wins
 func (t *TidalDownloader) GetDownloadURL(trackID int64, quality string) (TidalDownloadInfo, error) {