I wrote a couple of tunes for my Hob's Barrow video, including an uncharacteristically soft "requiem" for Thomasina which I didn't end up using. You can listen to and download those tunes here: https://spacequesthistorian.bandcamp.com/album/music-inspired-by-the-excavation-of-hobs-barrow
(Note: These are not based on the original game's OST.)