Idina Menzel's "Into The Unknown" with the instrumental from the Panic! At The Disco version of the same song.
The original already sounds good but remaking and mixing it with the more upbeat and rock version instrumental made it more epic! With that, I hope you guys will enjoy listening to this version of the song! :D
Also, will try to incorporate this to the animation sequence from the movie once it's publicly available online to see if really suits it. So do watch out for that too. :)