"I can see you" is an instrumental used in Paroo Fandom, in the episode of the same name. Although it was first used in this episode, it is generally used throughout the rest of the series as creepy, foreboding music. It has no specific lyrics, but there is an alternate version in which you can hear Holographic Pearl talking in the background. This is what she says:
I can see you now.
I'm getting closer
I'm right behind you
RUN.
I can see you now
You should run away now.
I'm right behind you now.
Watch out.