There's a beautiful YouTube video of this piece on YouTube with recorder and guitar. The original air is short.

https://www.youtube.com/watch?v=pbfKjq0H-9Y

The old song 'Callino Casturame' (presumable with variations) is number 158 in the Fitzwilliam Virginal Book.   Apparently that's to be found on Wiki's IMSLP site, but I haven't managed to beat my way through to it yet.

Simpler forms can be obtained from abcnotation.com