Angga also known as an activist who work for Green Music Foundation that he managed together with musician Glenn Fredly. Green Music Foundation, initiated a social movement named Save Mentawai in response to the 2010 Mentawai earthquake and tsunami. Angga also known as initiator of Pondok Cerdas Indonesia atau PONDASI Project, a library based community learning center built in several rural area, the library built for the first time in South Mapinang Village and Pasapuat Village, Mentawai.
