The narration sounded very pretencious to me at first, but I'm understanding that Zak wanted to give more context to the compositions beyond just naming a track. This way, the listener could listen to the song and imagine better what kind of background history inspired its sound. In my opinion, this would be well resolved with the spoken part written in the CD's artwork. But, with the digital music, maybe he wanted to make the narration just to be sure that everybody would have the information of the song's background. I do think that Zak did not intend that everytime we heard the music we should hear the intros... if so, why he would release them as separate tracks?
Anyway, liking this album A LOT! I hope that Zak continues to make and release more music in the future!