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A racetrack soundtrack. The fastest street-legal BMW creates its own music by tearing up the track at the BMW Performance Center. Four Sound Recordists captured 50 individual audio elements. 100% of the audio used in the soundtrack are actual sounds from the car. Here’s a list of the ‘instruments’ used in the final track: Tire Vibration – the bass Intake – hi-hat Distant engine – intro atmosphere Doors closing – kick drum Doppler effect of drive by – melodic Engine revs – melodic Door lock – per