Most of the time, I accompany documentary directors through my catalog of pre-existing music in order to pick the best possible tracks supporting the narrative of their films.
There is no standard music for documentaries as you may guess. So, best to speak directly with me and of course, if needed I can arrange some of my already written music or create new tracks to fit what you have in mind.
I can create something very airy, giving space to the voice over etc. Or I can create a "beat" or even some electronic music.