Prélude pour le Kyrie e la Vierge

Going through a folder on my laptop with some old recordings, I found this one. I think my first recording on the sample set of the Mutin organ in Bégard, trying the flutes 8'.

At the end the bass notes are hardly audible, but there is something happening beneath the chord you hear for a long time...
I added some decibels, but it could be wise to turn up the volume.