Can someone explain this to me?

m8ighty

I was watching the way you make me feel performance from the Michael Jackson 30th anniversary special on tv and had to see it again! So i youtubed it, and what came up was a performance that started off, to a T, exactly like the 30th anniversary one but instead of some no name girl coming out to walk the stage, Britney Spears came out and performed it with him.......
Now iv seen this performance once before, but i just now realized this and i was wondering where these different dates, different concerts, or what? i posted vids of each performance and besides Britney performing in one, they start off exactly the same?

With Britney

[youtube:2alffnfs]

Without Britney

[youtube:2alffnfs]

Dancer

Yes, there were two concerts at the 30th anniversary, on September 7, 2001 and September 10, 2001!

m8ighty

Thanks, that had me stumped