Delta Goodrem

The singer-songwriter said that she had recently "overused my vocal cords to the point of me having no voice for extended periods of time"

A service will be held at Melbourne's Hamer Hall later this month

“This is going to be a wonderful night together of music and storytelling celebrating the album that changed my life,” Goodrem said in a statement

He also dedicated ‘Angels’ to the late Shane Warne, who he called “one of Australia’s greatest rockstars”

Williams declared his special guest to be "the loveliest person, both inside and out”

Goodrem shared on Instagram that "this honour means the world to me"

Goodrem hit out at the government body after it posted a photo of her head with needles aimed toward it

The collaboration marks the first time the singers have performed together

Briggs, KYE, Flowerkid and more will also perform

Robbie Williams, Olivia Newton-John and Montaigne will also perform