Author/Piece query

Hallo

In the presentation of the Antegnati organ there's this incipit:

http://www.hauptwerk.com/clientuploads/directory/Instruments/mp3/SPD-StCarlo.mp3

Can please somebody tell me what is it?

Thank you!
er

Zipoli?

Thanks for the hint, but I don't think so: I own all Zipoli's organ works and there's nothing like this...
It could be Frescobaldi, but I'm not sure. And which piece?

Thanks again
er

[mdyde]

[Topic moved here.]