Fans go crazy when Nicole Kidman suddenly joins Keith Urban for a touching duet on stage

The talent of this famous couple needs no introduction. But when they got together to sing during an event, the crowd could not control themselves.

Country icon Keith Urban and Hollywood superstar Nicole Kidman made the crowd go crazy when they sang a chorus together at the Sydney Opera House, Australia back in 2013.

According to Country Rebel, Urban and Kidman are two of the most popular Australian artists, and they were both present at the event that honored Australia, in which a children's choir sang the emotional Peter Allen song, I Still Call Australia Home.

At first, the crowd was surprised by the entry of several celebrities during the singing of the chorus. Famous country artists like Olivia Newton-John joined the cast of celebrities to join in the special song.

After Newton-John, the crowd was stunned to see Urban emerge up on the stage. But they were absolutely excited when they saw Kidman as well come out from behind and join her partner on the stage.

The duo then began singing the choir together alongside other celebrities as well as the entire choir.

Kidman has proved her acting talents over the years. But she also showed her singing skills in her film Moulin Rouge. She also provided backing vocals on Urban's recent single, Female.

Still, seeing both Urban and Kidman together singing alongside each other was a truly special experience for the audience of the program.

Urban met Kidman back in 2005 at a Hollywood event titled G'Day LA, which honored the Australian artists. Urban was born in New Zealand but eventually moved to Australia, while Kidman was born in Hawaii to Australian parents and was brought up in Australia.

Both the stars are one of the most popular artists with Australian roots and they proved to be the perfect choice for making the even truly a special one for the audience.