'I wish he was here' - Chris Cornell's daughter on posthumous Grammy win

Chris Cornell's children have paid a touching tribute to the late Soundgarden frontman while accepting his posthumous Grammy for When Bad Does Good, which was released after his death.

Yesterday's win for best rock single marked the grunge icon's third Grammy - his first as a solo artist.

The 52-year-old's children, Christopher Michael and Toni, went on stage to accept the award in his place.

Toni Cornell, left, and Christopher Nicholas Cornell accept the award for best rock performance for When Bad Does Good on behalf of their late father Chris Cornell. Source: Associated Press

"I never thought we'd be standing here without my dad, and I'm sure he would be proud and honoured," Christopher said as he stood on stage with Toni.

"He was known for many things. He was a rock icon, the godfather of grunge and the creator of a movement whose contribution to music history made a lasting impact across genres and generations.

"He was also one of the greatest poets of his time, whose ... soaring, unforgettable vocals made him the voice of a generation," Christopher went on.

"While he touched the hearts of millions, the most important thing he was known for to us is for being the greatest father."

Toni added, "His voice was his vision, and his music was his peace".

"This is for you, Daddy, and we love you so much."