Jimmy Napes helped write this one, and it's one of the prettiest tracks on the album. It's from the more upbeat half of Adventure, and Kyan's vocals really sound good with it. (Yes, the album has two halves. Imperium is the transition point that was written to take the album from a more upbeat to a more serious tone.)
I really appreciate how it was written in more of a traditional song format instead of the newer dance format. It's quite radio-friendly, but that's not a bad thing. It's a sign of what pop music is slowly approaching as it takes in more and more of dance music as inspiration.
You're On will withstand the test of a time for a while, I doubt it would seem "old" for a while, especially if pop music in the future starts sounding similar to it. (Which I predict, see you all in five years to see if I called it or not!)