When I Snuck In

From the stairwy I spyed on you
Sitting with headphones on
listening with your head down
The plush green carpet, your throne
in front of the stereo.
You didn't hear me come in
For otherwise
you would not allow me to see you
like this.

I wonder what song has led you to smile.
Better not to hear the tune
because its your music and not mine
unless offered willingly.