Anang Hermansyah and Ashanty performed at GBK after the Indonesian national team's match against the Philippines last night. After the match ended with Indonesia's 2-0 victory over the Philippines, Anang and friends entered and sang several songs.
It turns out that Anang and Ashanty's presence was at the invitation of the committee. They were asked to perform a national song and one up-beat song, and it was the up-beat song that led to them being criticized by the audience in the stadium, eventually leading to Anang and friends walking out.