This technology was enhanced thanks to the synchronisation, in Space Mountain – De la Terre à la Lune at Disneyland Paris or Indiana Jones Adventure at Disneyland. This time, the music can stick to each event of the ride : vehicles can speed up or slow down from on ride to another, or even be stopped for some seconds, causing the music to be unsynchronised or prematurely end. To avoid this, the music is divided in several sections, started at the right moment thanks to sensor on the ride vehicule. For the music to run smoothly, each track has an « extensible » ending, which can be faded into the next one.