Linkin Park was joined by Jay-Z for "Numb/Encore". After the first chorus, the piano part was changed up and it was revealed that the band was doing a form of Yesterday by The Beatles. Instead of doing the "Numb" part of the song, Paul McCartney came out and they sang part of Yesterday to end the song.
A full orchestra was present behind the band.
The song is referred to as Yesternumb.
This is the only performance of the song ever, outside of rehearsals.
Rehearsals took place earlier in the day. Photos are available on WireImage.
Other Notes
Numb/Encore won an award for Best Rap/Sung Collaboration.