When I first saw the title, I was extremely confused. There's already a song called "Adrift-Chillstep", so you might want to change the title to avoid confusion.
Now about the song. The piano and chord progression were nice, but I feel that the drums didn't fit with the song at some points. Take, for example, the drums at :17. There's nothing wrong with them alone, but they don't fit with the song. I can't explain it too well, but you might want to put a bit more thought into using which type of drum. It could just be me, though, to take this review with a grain of salt.
I'll give it a 3.5/5.
Hmmm yeah, to be honest this song isn't my best :] I'm making lots of stuff meanwhile, so yeah. I'll change the name when I find a suitable new one. Thanks :)
I'll change the drums :)