Song used for Lonely Gun 30xx?

Hey everyone, I was just wondering if the song used for Lonely Gun 30xx is available anywhere? I love the soundtrack and bought it when it became available, but is it ever going to be updated with all the new additions to the game?

Thanks!

It was made by the Tower Unite sound composer. It seems like it has not been added to the steam version of the soundtrack just yet, however it may come soon.