Before long, I will disappear

Before long, I will disappear.
Like a wisp of smoke after the fire is out.
But these few words may have their own career.
Listen while they still whisper or shout.
Before long, I will disappear.

But now I dial your answering machine,
and leave my messages.  Listen well.
I have news for you.  Some secrets, I mean.
And you are just the person I can tell.
Before long, I will disappear.