“Prelude” was written exclusively for EP. The other tracks were actually taken from Illusionism and thus were produced much earlier than EP’s release date.
The decision to release EP was based on the idea of existence. As the internet grows and plays a bigger role in our society, an artist’s existence can more easily be known of. Officially releasing material has played a big part in expanding the already existing fan base and simply marketing the music to those unaware of it.