*In process of stocking* The Room Above was recorded in the church of the Helvetic Circle in Genoa, in the 2020 lockdown. I played the church's organ in the present moment, with no score, over four consecutive days, possibly inspired by long sonic walks in the surrounding mountains and along the Ligurian coast. The intrinsic architectural sonic spatial identity of the building entered the recordings. The cumulation of sonic spaces - those initially present, those of field recordings, those of future concert venues, and those imagined by the listener - lead to a sonic moiré, a polyphony of spaces. Such a sonic moiré is the perception of several strata of spaces, as is comparable to the perception emerging from Marcel Duchamp's rotoreliefs between the work and the perceiver, in a cinematic experience for the mind.