I'm thinking ship warfare. or maybe medieval something
the music has a particular feel though it isn't so specific or stuctured. what I mean is, for example, the menu theme is not something anyone would likely be humming in memory and cheer, which might be what you want in a menu theme (because a memorable theme will make people remember your game!) But perhaps you just want something that sits in the background to give a tone, which I think it does well.
Similar for in-game music, but this time being more background is probably for the best. it reminds me of some strategy games I played, so maybe this game is about strategy..