First, you did a very good job...good flying, respectful music. I can honestly say I never seen a drone video of a cemetary! I would have ended it about the 3 minute mark. The music naturally seemed to end there.
I did see an interesting drone video once where a guy flew very slowing over some very old graves in a cementary, made the video black & white and very dark and over it has a graphic that looked like dropping blood that said, "Happy Halloween". It was :10.