I'm sure, of course, that he has lost a step, vocally. How could he not? But he's smart enough to surround himself with an adept group of vocalists. Three part harmonies were the norm tonight and four weren't rare. If Plant ever needed to hold back, Patty Griffin, Darrell Scott and Buddy Miller separately and collectively ensured that none of the momentum faded.
I'll write more tomorrow, but some of the highlights included a haunting version of "Satan, Your Kingdom Must Come Down" (with the stage bathed in red light and Plant prancing like he'd had practice), a slightly dissonant version of the Plant/Krauss barnburner "Please Read the Letter" and on a more abstract level, all the Zeppelin songs, like "Houses of the Holy" and "Rock 'n' Roll," where Scott's pedal steel stood in for Jimmy Page's monster riffs.
That's a really awesome way to tweak your legacy if you're Plant.
What'd you think?