Ungu is an Indonesian band formed in 1996. Its members are Pasha - singer, Enda - guitarist, Onci - guitarist, Makki - bassist, and Rowman - drummer. On December 19, 2006, there was a riot in their concert “Popcoholic with Ungu” in Widya Mandala Krida Stadium, Kedungwuni, Pekalongan that resulted in the death of ten people.

Source: http://www.last.fm/music/Ungu/+wiki