Hello Mason! I can well imagine how much you enjoyed having the chance to play such a magnificent instrument that literally fills the entire hall or church. And—even though you’re a professional pianist—I don’t think playing the organ is your daily routine, so you took the opportunity to improvise, record a video, and share it with us—thank you so much for that. A few years ago, I also had the chance to try my hand at playing the organ—at Gethsemane Church in Berlin. And I recorded a video as well, but—given my piano skills, which are “barely good enough for playing at home”—I can’t post it; that would be too embarrassing for me and others … What I learned is that while the organ is indeed a “royal” instrument, it is also a “diva” that, despite the magnificent reverberation in a church, forgives no mistakes in articulation, and that it is very difficult for a piano “player” to play legato consistently without the support of a sustain pedal. What I particularly appreciated was that you’ve chosen the key of B-flat minor for your improvisation. For me, this key is one that expresses solemnity, and perhaps also a kind of sorrow or suffering. This impression is particularly influenced by the preludes and fugues in B-flat minor from both books of The Well-Tempered Clavier (where the famous fugue from the second book was one piece I tried to play at that time, along with one of my own fugues...)