A melodic dustep. The song itself is a bit harder, well compared to other tracks around that genre, while the melody is more dreamy, which balances the whole thing.

Lyrics:

It's your own world, and stays your empire
Enter whenever you want, talking about your dreams
Just go ahead, and go to the bed
Quickly fall asleep, talking about your dreams
If you control your dreams, thinking about some good
Everything is fine, talking about your dreams
Something might be so true, something might be so wrong
But you have not to care, talking about your dreams
Just go ahead, and go to the bed
Quickly fall asleep, talking about your dreams
Thinking about some good, everything is fine

Have nice dreams!