Andrew Owen posted a short update to the Ultima Dragons Facebook group in which he gave some additional details about the soundtrack for U3.5: Pax Britannia:

U3.5:PB. Grams. 11 tracks. Gypsy, Theme, Ship, Talk, Wanderer, Town, Shop, Castle, British, Combat and Dungeon. Gypsy will only be used during character generation and you can probably guess which track I chose. Most of the tracks are traditional folk tunes from all over the British Isles that I grew up with. For Combat and Dungeon I’ve gone with two classical pieces.

Given the delightful nature of the soundtrack sample he released just recently, I for one am looking forward to hearing the entirety of the game’s soundtrack that Andrew has put together.