Groovy tune, bro!
First of all, I've listened to the song a few times through already and I must say that after each listen I notice something from the song I hadn't heard before. I was extremely impressed by the transitions from one beat to another because every one of them flowed smoothly and effectively. The parts where it would all of a sudden go silent and then the beat would build up sounded great, surprised me every time.
I especially like the part at the 5 minute mark when all the previous rhythms joined together. The lullaby-like opening was also a great way to start the song and definitely deserves some recognition. I could see this song in an adventure game of sorts, it seems like it would fit on a map level or during a cut scene. Overall, fantastic work, fully deserving of a perfect score. Keep up the great work!