Sister Sledge star Kim Sledge has re-recorded her band's disco hit We Are Family to raise money for the World Health Organisation.

The 63-year-old legendary singer will donate proceeds from a cover of the band's iconic track to the World Health Organization Foundation to encourage international unity amid Covid-19.

Speaking during an online WHO briefing on Monday via video call, Sledge addressed the song's lyrics and their relevance today.

"What it means is very personal to me because I have two members of my family, my husband and my daughter, who are physicians, who are on the frontline.

"So already the family words are about family. But the world is a family and those words are calling us together as a family to embrace one another through this time," she said.

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"I feel that the song itself is one that has been about solidarity. It is about what families do when there are times of crisis.

"And that is come together, look out for each other, find ways to solve solutions. That makes the whole family strong."

"And this world family will be much stronger as a world family, as we embrace those words, as we attack and bring about what needs to happen, anything that conflicts and causes a problem with our world family.

"So that's why we are family."

Sledge will launch the new version of We Are Family on November 9 during the opening of the World Health Assembly, with a performance alongside choral singers from New York to Tonga.

Celebrities, frontline workers, international leaders and members of the public will also feature in a music video for the updated track.

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