The Town in My Pocket

I was grew up in a town what has the kindergarten ,the elementary school, the junior high-school, and the high-school from which I graduated. But the town Is small enough to fit in my pocket.
It had been my whole world until I have left from it. I was born there, lived there, loved someone there, and...
Now I am there again. But you I loved is no there already. And I sing to you from here.