Anyone know of any songs similar to this?

[Balthazar]

So yeah awhile back I was watching the Cartoon Network version of the anime series ./hack-sign and I procured the soundtrack and theres some good songs on it, but especially the "B.T." track is a really nice, sad kind of symphonic piece that I REALLY like.

So does anyone know of any really good symphonic (or ortherwise I guess) kinda sad songs?

I'm sure if you look hard enough you can find the song I'm talking about for reference.

TIA!