Some music starts at that point. I couldn't find the music on c418's bandcamp when I just checked. Maybe the music title is a clue?
That song is one of the few that come with minecraft and that plays on it's own I hear it all the time. It's the 2nd half of the song "Mice on Venus", or Piano3.ogg in your minecraft files (More specifically, around 3:50 into the song). Not denying the possibility that it's related, since the only thing that happens at 0:59 seconds in on that episode of Forsaken Lands is Kelvin is named and this music starts playing