User blog comment:Master Sima Yi/Assassinews 04-07-'12 — Independence and Rise Trailers/@comment-4374396-20120705184225/@comment-5503561-20120706133458

You guys could just type in Assassin's Creed Revelations OST into youtube searchbar.

That aside, that bit is "Investigation" - and it's played fifty plus other times in the game. As good as it is, they seriously needed filler music, and this was it, apparently..