This is a realization of one of Fenaroli's partimento using Chamber Strings - Full.
The walking bass line reminded me of Corelli, so I borrowed the rhythm for the upper parts from the fourth movement of his Concerto Grosso No. 3 (which uses a similar walking bass line).
https://soundcloud.com/leslie-sanford/partimento-fenaroli-book-01-no-6
You can find the original partimento here: