One of the things I love about the internet is serendipitous discovery. On Facebook, I saw that Manuel Rosales “friended” Jeanne Demessieux, an amazing organist and composer who passed in the sixties. I have some recordings of her imposing etudes Op.5 that are rarely heard.
While surfing for Demessieux recordings, I stumbled upon improvisations by Sophie Choplin:
That led me to a video of Philippe Lefebvre, one of the organists at Notre-Dame in Paris improvising a Recessional improvisation on what sounds like the Salve Regina chant.