In case you couldnt figure out just by listening, this song is actually in english.
Then again, Riku's english or should i say Engrish, is certainly not the best.
Lyrics~~ :D

...ROMANCIA...
Overlapping feelings of two people need not be discriminated the
excess deepening infinity of time...this extending space...

The person keeps walking as long as it lives.
The flying thing to want to run after you who flew away previously
has not been permitted yet.

Permitted place
Place near heaven

Now let's fly away.