Fleetwood Mac has always thrived on, for better or worse, the dynamic among its members, and that tension was a vital part of the show's ebb and flow. Introducing "I Know I'm Not Wrong," Buckingham said the band has had "a complex and convoluted emotional history."

Case in point: After singing "Sara," Stevie Nicks sauntered over to Buckingham's microphone, peered into his eyes, and sang the last verse directly to him. Even though the song is more about Nicks's relationship at the time with Mick Fleetwood, Buckingham collapsed his head on her shoulder. Scripted or not, it was the evening's most poignant highlight. "We didn't rehearse that one," Buckingham said afterward, looking a bit flushed.

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