which ost was played in naruto episode 6 "a dangerous mission! jouney to the land of waves" at 18;40 ? Please tell me.
I'm pretty sure this is an unreleased track. It doesn't show up in Naruto OST 1, 2, or 3, in any case.
It sounds like a slow version of the main Naruto theme. I searched "Naruto theme slow" on YouTube and this unofficial version popped up.