Fine.
The song is decent. The composing, on one hand, is fantastic. The piano was simply amazing. It was something new constantly, and it was catchy. The synths at around 2:00 are beautiful as well. The only problems I could pick out were the percussion and some of the instruments. FL Slayer is a no-no at all times. Avoid it. The drums were the same loop throughout the entire song. Maybe mix it up a little bit? Make build-ups and maybe a quieter set. Something other than the one loop. Fix those things up and this song will be infinitely better.