Originally Posted by
TheBang
Sorry, but you're mistaken. It's all in the same register and key as it's always been.
But, as far as the melody, you're right though, he's not signing the original melody. There are two changes from the original melody:
In the original, both instances of "and you could have it all" are sung the exact same way. The first difference is that in the studio version "could" is a lower note than "you". In the live versions, he always sings "could" on the same note as "you" though. From what I can tell, he's been doing that since Fragility, and the last time he sang that note the studio version way is on the Self-Destruct tour.
The other difference is the one you're pointing out, which is singing the note lower for "it". In the studio recording, both times, he sings "it" on the same note as "all". On the live versions, since 2013, he's been dropping "it" one step lower than "all", but only sometimes. For example, at Fuji Rock, he sang it the same note both times. Outside Lands, same note first time, different notes second time. Lowlands and Made in America, same note both times. Staples Center, different notes both times.
That said, it's all still the same register and key as the original. It just sounds more strained, cause it's more difficult for him to hit that range.