Soundtrack

Hi.
looking at this game with an eye to picking it up. Looks like it fills a lot of niches in what i enjoy. 
Could someone explain what tbe soundtrack is that i can buy as an extra on steam. 
Not been able to work out what it actually does, or adds to the game, so unsure whether to invest in it as an extra.
Regards.

Hi there.

Soundtracks are for listening to the game music outside of the game, they do not really add anything to the game =)

Just like a soundtrack for a movie for example. Hope that explains it!

Perfect, thank you.

Not something i need at this time.