diff --git a/src/Experimental.h b/src/Experimental.h
index b310e215f..db9f2d498 100644
--- a/src/Experimental.h
+++ b/src/Experimental.h
@@ -57,6 +57,9 @@
 // DA: Enables dark audacity theme and customisations.
 //#define EXPERIMENTAL_DA
 
+// Define this so that sync-lock tiles shine through spectrogram.
+#define EXPERIMENTAL_SPECTROGRAM_OVERLAY
+
 // EXPERIMENTAL_THEMING is mostly mainstream now.
 // the define is still present to mark out old code before theming, that we might
 // conceivably need.
diff --git a/src/TrackArtist.cpp b/src/TrackArtist.cpp
index 84249c060..37ba2f3ca 100644
--- a/src/TrackArtist.cpp
+++ b/src/TrackArtist.cpp
@@ -2259,10 +2259,11 @@ void TrackArtist::DrawClipSpectrum(WaveTrackCache &waveTrackCache,
    wxImage image((int)mid.width, (int)mid.height);
    if (!image.IsOk())
       return;
+#ifdef EXPERIMENTAL_SPECTROGRAM_OVERLAY
    image.SetAlpha();
-
-   unsigned char *data = image.GetData();
    unsigned char *alpha = image.GetAlpha();
+#endif
+   unsigned char *data = image.GetData();
 
    const auto half = settings.GetFFTLength() / 2;
    const double binUnit = rate / (2 * half);
@@ -2603,8 +2604,10 @@ void TrackArtist::DrawClipSpectrum(WaveTrackCache &waveTrackCache,
 #endif //EXPERIMENTAL_FFT_Y_GRID
 
          int px = ((mid.height - 1 - yy) * mid.width + xx);
+#ifdef EXPERIMENTAL_SPECTROGRAM_OVERLAY
          // More transparent the closer to zero intensity.
          alpha[px]= wxMin( 200, (value+0.3) * 500) ;
+#endif
          px *=3;
          data[px++] = rv;
          data[px++] = gv;