I love organ music. I always have.
Two of my most favorite composers are French. One is Henri Mulet. The other is Charles Marie Widor. Mulet composed "Tu Es Petra" Widor wrote many pieces, but amongst my most favorite is the Toccata from Symphony No. 5. Another favorite is "Le Jardin Suspendu" by Alain
but I think this is not the best of recordings.
Turn up your speakers, or go get some decent ones if you want a treat.