Alright I have been searching for this forever and it's bothering the hell out of me, in Naruto (the original series, the old one where naruto's a kid[since googling "naruto" in any capacity returns shippuden exclusively]) Episode 13, what is the song that plays when Haku uses crystal ice mirrors? It's really somber. 17:11 if you need a timestamp
The song you are looking for is Haku's theme
Haku's theme never made it to an OST, and is therefor an unreleased soundtrack. And judging by how long ago it has been used, I am assuming it will not be released as one either.