Odadjian is a popular DJ in the LA area met by `` Dj Tatic '' , taking part in such events as the `` Rock\/DJ Explosion '' on March 2 2001 at The Roxy in Hollywood and collaborating with bandmate Tankian on SerArt , the singer 's side project with Armenian musician Arto TunÃ boyacÄ yan . In addition , Odadjian is a popular DJ in the LA area , taking part in such events as the `` Rock\/DJ Explosion '' on March 2 , 2001 at The Roxy in Hollywood , CA and collaborating with System of a Down bandmate Serj Tankian on Serart , the singer 's collaboration album with multitalented Armenian musician Arto TunÃ boyacÄ yan .