Alt-metal titans were slated to perform two headlining concerts in L.A.
Dave Grohl and System of a Down singer took a "Holiday in Cambodia" at the VMAs
System of a Down singer helped take 'Undertow' single next level
From Chino to Chester
System of a Down singer unveiled 24-minute modern classical composition
Directed by 'Lord of the Rings' and 'X-Men' visual effects artist Roger Kupelian
Personal track from artist-activist's new solo EP 'Elasticity'
See which System of a Down song beat out "Chop Suey!" and "Sugar"
System of a Down singer talks political engagement, Armenian genocide, fan tattoos and more