Where is the voice that sang to me&;#063;

Where is the voice that sang to me?

It lulled me to sleep,
With a murmur of words,
But I was awakened by,
The cheerful chirping of the birds,
It carried me off,
To a far away land,
A fantasy dream world,
That I didn't understand,
And now it falls silent,
Now insomnia call,
And nightmares enter,
Where I fall and fall,
Where is the voice?
That was soft and sweet,
But now at night I only hear,
My rhythmic heart beat.