Exile Vilify Ratman Room

[Subliminal Tapir]

I was playing Portal 2 in the second test chamber after GLaDoS's revival(The one with 2 energy beams) when I stumbled across a ratman room with drawings on the wall with references to the song Exile Vilify such as "does it feel like a trail" scribbled one one of the walls there was also a radio which played Exile Vilify instead of Still Alive