Machinima Documentary Modes

The mode that i am using to create my machinima documentary is the Observational mode. I believe the Observational mode, in which i have chosen to use in my machinima documentary, is effective, because i am recording my documentary in first person, moving along my porosity, and interacting with other interactive objects. Using the Observational mode, i am able to record my porosity, and capture things whilst in first person and moving around, also with the use and help of sound. The purpose of an observational mode is to observe what is taking place in camera, allowing viewers to interpret what they are seeing. However i haven't 100% taken in the Observational mode in my documentary, as i have used 'music' in which most cases, aren't used in observational modes.