I have this dream...?

I am asleep, then I open my eyes to pure darkness suddenly my eyes adjust, how? I have no clue because I am lying in a coffin, I can see the satin lining of the coffin lid, I feel as I am suffocating, but then to my surprise I can breath, and then I am above my grave looking up at a full moon the night air is crisp. Then from afar I can hear soft singing, like a chorus, but the music is not sad it is joyful...I have this dream on a nightly basis it is so sensory filled, I can smell the grave dirt, feel the gr and the dew upon my skin...What do you think besides the fact that I may be crazy?