I want to share something that has been around my head since the come back show.
It's a personal story. I was in a band like 10-12 years ago, we started as a cover band playing Deftones and Linkin Park mainly and to fit better the vocal range of the guy who sang for us, we had to change the key of many songs, for example Breaking the habit or Bleed it out so when I heard the key change on the show didn't sound weird/New to me because we had to did the same back them for our shows. A couple of years later the guy left the band and we picked a girl to sing. We started our shows with Somewhere I belong with the 2007 intro (the one with the drum fill) so when Linkin Park started the show (after TEM) and Emily began to sing the "classic" songs it sounds very natural because I was listening Linkin Park songs sung by a girl for 3 years.
Of course Emily is a professional artist and our girl was an amateur, the skills can't be compared but the feeling was there. They're still Linkin Park.