There are contradictions with Part of Me/Chair, because in Frat Party at the Pancake Festival (I believe it was on there, correct me I'm wrong) Mike says that the original demo came from the car alert that Brad recorded (heard in the beginning of (PoM), and then there is the Beat that Shinoda made, so I believe that 'young Mike' was right and that it started off with the alert, but then there must've been two demos because it was not yet on Chair^^