The tracks played in the game are all very enticing. Unfortunately they have a lot of noise, apparently added intentionally (maybe to mimic ambient noise?) which I don’t like as much…
The music is credited to Paul Romero, Rob King and Frank Simes, and seems to have included recordings of classic guitar and a real harpsichord.
Paul Romero (unknown relation to John) seems to have a lot of success as a musician, as shown in wikipedia. He seems to have written a Symphony with music from this game, which has already debuted live! Very interesting, although I couldn’t find a recording unfortunately.