Indonesian rock singer/songwriter who increased to fame because the lead vocalist from the rock-band Koil. As an associate of the music group he performed beneath the professional stage name Otong. He started recording materials with Koil in 1994 as well as the music group released a mini record known as Demonstration From Nowhere that same season. He and Koil released a studio room record entitled Blacklight Shines On in 2007. He’s the older sibling of fellow Koil member Donnijantoro. Both he and Ahmad Dhani had been successful Indonesian rock and roll singers.