In the Hall of the Mountain King · Tesla Light Show
by Edvard Grieg
Grieg wrote it for Peer Gynt in 1875: a creeping theme that repeats faster and louder until it tips over into chaos. The show follows that crescendo almost literally. It starts nearly dark, the darkest show in the catalog on average, and genuinely builds, the final third more than twice the first, led by the inner main beams with the brake light answering. Two minutes forty-two. A Halloween pick for anyone who prefers slow dread to jump scares, best started with every other light in the street off.
How this one is choreographed
The choreography is deliberately unhurried: the lights re-fire about 0.4 times a second, so cues land as separate moments rather than a blur. It builds. The car runs about 14% of its lights through the opening third and finishes near 30%, so the biggest picture is the one you end on. Most of the work falls on the inner main beams, re-firing about 0.8 times a second, with the brake light answering back at 0.6. It runs 2:42 and averages 35 of 255 across the light channels, a darker show that spends most of its time well below full, so the hits carry further. About 23% of the light values are partial, toward the top of the range for this catalog, so the show leans on swells and dimming as much as on hits.
Measured from the exported light sequence for this show, not estimated from the song.
Get it for your Tesla
This show downloads for every Tesla: Model 3, Model Y, Model S, Model X, and Cybertruck. Preview it on your model with the View-on picker above, add it to your library, and it re-tailors to your car's lights automatically.
How to play it on your car
- Open the show above and add it to your library (remix it in the builder first if you want).
- Add your own copy of the song: an MP3/WAV you own. We distribute only the light pattern, never audio.
- Export the
.fseqbuilt for your model, then place your song next to it (or let the one-click USB writer do both). - Put both files in a
LightShowfolder on a USB drive. Or skip the manual steps: in Chrome/Edge, click 🔌 Write it to my USB drive for me right after exporting and we do it all, verified byte-for-byte. Then plug in and start it from Toybox → Light Show. Full walkthrough in the setup guide.
Car says Light Show instead of Custom Light Show, or the drive is not detected at all? That is the USB format, the folder name, or filenames that do not match. If it plays but drifts out of time, that is the audio sample rate. Fix both here.
Running this on Halloween night? The Halloween guide covers timing it for trick-or-treaters, keeping the battery happy over a long evening, and what to do about the neighbours. Read the Halloween guide.



