Usually dead

I am usually dead.
I rarely live,
But few moments, far, definitely few,
I just am truly alive.
You are the author of some of them.
I am usually dead,
I rarely live.
But few moments I have blazed in raw glory,
You have been the creator of some.
I am usually dead,
I am hardly alive.
In all moments though just lived in memory,
You the maker,
I have begun to live in yours,
I am usually dead,
I am always dead.