It's the choir ah's...
That's why it sounds like Chrono Trigger, the same midi sounds were used in the game. :D
Not bad, for a MIDI song, but I believe you should have made a slightly louder and constant bass section, the guitar-only parts (where the bass plays the exact same melody of the guitar) sound a bit hollow without the proper background. Other than that, it's OK. Also, I think this would be better used as a level song, It just doesn't have that tragic Game Over feel. Just my opinion.
It was nice, I liked it. 5/5, 9/10.