Koniving

Additional approval and change license for text work. Alright, so using this DayZ video of mine as an example (Can't post a link) youtube . com /watch?v=r_78zuEXDy8 (Video title: Kon (DayZ) | Quest for Helicopters? Quest for survival! episode 4), what license would I need or approval to gain? The text work is intended to help develop the story and interest and to set it apart from other videos (as well as to give credit for music used). I'm also aware that I would need to get separate approval for the soundtrack (or get smart and use royalty free music... but finding good ones for horror is difficult at best).