Clean version System Of A Down: Daron Malakian (vocals, guitar); Serj Tankian (vocals, keyboards); Shavo Odadjian (bass guitar); John Dolmayan (drums). Many rock bands talk endlessly about their "sound, " refining a basic formula until its either perfect or perfectly boring. System of a Down, however, developed a loyal fanbase with the opposite approach--the group mixes genres so freely that describing what their music sounds like is nearly impossible. Sure, SOAD is