Chasing Ghosts is a Cassette in Deathloop.
Location

Found on the metal grate on Cliffside Plateau in Updaam anytime.
Transcript

Moonie: Night has fallen on the isle of Blackreef, as we continue our expedition in the fantastic and the paranormal. Tonight, what we have been calling the 'ghost lights' - mysterious glowing orbs far out on the horizon - have graced us with their presence. Is this the arcane language of an other-dimensional trickster? Or are fairy folk simply dancing along the shore? Wherever these 'ghost lights' may be, dear listener, I can assure you we are doing our very best to record and decipher the enigmatic gifts of this cold and isolated land.
Frank: Moonie? Who the fuck are you talking to?
Moonie: Oh, uh, just recording my observations! I'll be back in a minute.
Moonie: Fuck's sake.
Colt Note
Moonie Johnson sang and waxed poetic on the “ghost lights,” an unusual Blackreef phenomenon.