What you're eventually hearing is the english version of Amalee's Crossing Field. It is supposedly a Chinese theme song that opens on the first season's episodes of "Sword Art Online". There is no longer the real music for the English version. However you can listen to the whole version of the song on this link:
Appears on these pages
When you're scared, when you're hanging on, when life is hurting you, then you're going to see...