Comparing her win to 2012, she said: "It's like coming back to a family."
The four members of Abba appear together in Sweden, and surprise fans with an impromptu singalong.
Ukraine's Jamala wins this year's Eurovision Song Contest, held in Stockholm, Sweden.
Sweden, Russia and Italy are among the favourites to win the 60th annual Eurovision Song Contest, which takes place in Vienna later.
Comparing her win to 2012, she said: "It's like coming back to a family."
The four members of Abba appear together in Sweden, and surprise fans with an impromptu singalong.
Ukraine's Jamala wins this year's Eurovision Song Contest, held in Stockholm, Sweden.
Sweden, Russia and Italy are among the favourites to win the 60th annual Eurovision Song Contest, which takes place in Vienna later.
