"Sycamore" is the track with which Caspian end all of their show (or at least the 3 I've seen them) and there's a pretty good reason behind it.
I think the track resembles life. The beginning is very slow, unknown and unsure and just like a baby you try to learn about the world around you. Eventually when things get more familiar, it all collides together and it makes perfect sense, just like the evolution of guitar chords at the start of the track.
...and then life hits you, often with its full capacity and you have to push, fight, struggle, improve, change and hope that eventually every single piece of the puzzle will fall in its place (all the guys surrounding the kit) and all your efforts will lead you to this one perfect moment in time which is called happiness.