Since 2011 their trademark erhu has been complemented with stringed instruments including the koto and shamisen, as well as Tibetan Bells and shakuhachi and pgaki flutes, the latter of which are traditionally used by the aboriginal people of Taiwan. The band members are also acclaimed artists and political activists who advocate independence for Taiwan and self-determination for Tibetans and Uighurs. Singer Freddy Lim served as Chairman of the Taiwan chapter of Amnesty International from 2010 to 2014 and has been a legislator since 2016, representing the New Power Party. Since their formation, Chthonic has released eight studio albums. Their most recent full-length record, Battlefields of Asura, was released in October 2018.