The singer 'Tegar' initially invited Ryeowook to duet through a direct message on Instagram. Unexpectedly, his invitation was positively welcomed. "I'm really happy to be able to make Rossa's fans and Indonesian Elf watch live," he said.

Not only a duet, Ryeowook also sang four songs together with the Indonesian diva. Rumors have been circulating that the singer, born on October 9, 1978, received a payment of Rp500 million for each song he sang, or a total of Rp2 billion that should be paid by Rossa's party.

Apart from performing Rossa's songs, Ryeowook also performed his own hit song titled "The Little Prince" and his latest song titled "It's Ok", which was just released on November 20, 2023. This is the first time Ryeowook has sung this song live in Southeast Asia.