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Elton John AIDS Foundation’s 17th Annual An Enduring Vision Benefit - Show

That’s in part becauseAretha Franklinperformed at the Elton John AIDS Foundation fall gala in 2017— and it ended up being her last performance ever.

“She was so sick,” John told reporters Monday night before the event at Cipriani in Manhattan. “And we went to see her before the show and she was so frail.” Franklin was due to perform at John’s gala in 2016, but ultimately had to pull out. “I said, ‘Are you okay?’ She said, ‘I can’t let you down again,’” John, 71, recalled the Queen of Soul telling him.

Last year’s soirée took place at NYC’s Cathedral of St. John the Divine.

Franklin ended upsuccumbing to pancreatic cancerjust nine months later on Aug. 16, 2018.

John honored her in his speech Monday night. “She just smiled her sweet smile at me and said, ‘I don’t want to let you down,’” he recalled of the conversation they had before the event. “I honestly didn’t know how she could perform in her physical condition … and she did perform. She raised the roof … she made us all weep. She gave the performance of a lifetime.”

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Elton John AIDS Foundation’s 17th Annual An Enduring Vision Benefit - Show

Elton John (left) and David Furnish.Paul Bruinooge/Patrick McMullan/Getty

Elton John AIDS Foundation’s 17th Annual An Enduring Vision Benefit

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“Especially when you see the people that you’ve given the money to, who are so grateful. Sometimes you think, ‘I’m running out of steam here, I don’t know if I can carry on,’ and then you go and visit the projects that you fund, and these people who have nothing compared to anybody else are so grateful for what they’ve been given and the hope that they’ve been given. You think, ‘Oh my God.’ They’ve just energized you to go back and do more. So that’s why we keep doing this; there are people who still need our help. And until they stop needing our help, we’ll be doing it.”

source: people.com