Title and singer of that english-sounding song in Tokyo Ghoul Root of Aogiri anime?
What I usually do in cases like this is look the show up on AnimeNewsNetwork, where it lists all the insert songs used in the show:

http://www.animenewsnetwork.com/encyclopedia/anime.php?id=16318

I don't have enough reputation to post more links yet, but it looks like it might be the songs "On My Own" or "Glassy Sky" (both on Youtube). They're both song by Katherine Liner, BTW.