While there's still a lot we don't know about the death of Anna Nicole Smith, more and more details are leaking out.

Among them is the tape of the 911 call made moments after Anna Nicole was discovered unconscious in her Florida hotel room last Thursday. Click here to listen to it on TMZ.com.

The caller is oddly calm during the call. A lot more calm than Howard K. Stern pretended to be in a recent interview, at least.

And a lot more calm than Britney Spears on ... well, any night of the week.