Close-up of the engine
(Image attached for reference: Custom Harley-Davidson with neon blue lights in the engine)

Ultra-detailed close-up of the engine running, the blue lights pulsing in sync with the opening chords of "Come As You Are" (Nirvana - slow, distorted version).

Deep engine roar + guitar distortion (Nirvana) building in intensity.

Start-up (15 sec) – Rider's POV

Low-angle camera (Sons of Anarchy style), the rider (face hidden under a matte black helmet) twists the throttle.

Blue engine lights radiating through the smoke (simulated cold start).

Gravel spray under the rear wheel (simulated in post-production).

Roar of the Harley (authentic Twin Cam '96 sound) + explosive Nirvana drums starting up.

Departure towards the street (20 sec) – Tracking shot back

Camera moving at wheel height, following the motorcycle as it drives away down a deserted urban street (neon signs of unlit stores, wet ground reflecting blue lights).

Color grading with a blue/black tint (inspired by Nicolas Winding Refn's "Drive").

Motion blur at the edges of the image to accentuate the speed.

Sound: Mix of engine sound + Nirvana chorus (at 0:45 of the song for emotional impact).

Excerpt from "Come As You Are" (Nirvana) – saturated instrumental version with accentuated bass.

Low frequencies for the engine (20-80 Hz).

Reverb on the guitar for an "underground garage" effect.

Blue light trails behind the motorcycle (Tron-style, but subtle).

Dust particles suspended in the headlight beams.