Ionosphere focuses on the organ's sounds usually almost unhearable and unnoticed due to being quite, far from the listener, blurred by the acoustics of the space or considered artefacts accommodating the “proper” sound.

The wind from the blower, the tiny nuances and changes on the border between wind and tones, frequency beatings from the half-opened stops' combinations. Electromagnetic fields recorded with special microphones create an electronic layer of the piece.