...no, then it's not the most famous C.Frank's Panis Angelicus.
It's a late XVII century mottetto, by the nearly unknown Italian composer Claudio Casciolini.
I received the basic 3 voices score as a gift by a friend in San Diego, and I did the rendition to send back as a tribute to my friend's love for ancient music.
I realize the Continuo in the late 1600 style, using Gamba, Positive Organ, Harpsichord, and two baroque violins (all GPO, balancing sounds).
Panis Angelicus, mottetto di C.Casciolini
If somebody knows a tip for strong de-essing, please suggest: my de-esser filter is not working at all with my Italian esses!