U2 returned to their roots for an emotional performance of “One Tree Hill”.

The band kicked off their Joshua Tree Tour 2019 at the Mount Smart Stadium in Auckland, New Zealand on Friday. It was the first time U2 has performed songs from their critically-acclaimed 1987 album The Joshua Tree since Oct. 2017.

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“One Tree Hill” is inspired by a volcano in Auckland and was written in honour of U2’s late friend Greg Carroll. The band met Carroll, a young Māori man, in Auckland in 1984.

“We sort of adopted him, or perhaps it was the other way around,” Bono told the crowd. “But we were very grateful for his companionship over those precious times together. He was taken from us too soon, but in a certain way, he’s still very present. So this is for Greg Carroll.”

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Carroll tragically died in a motorcycle accident on June 3rd, 1986.

U2 did right by Carroll, delivering an emotional and impactful live performance of “One Tree Hill” for Auckland’s hometown crowd.