Bassist goes rap-rock on single "Like That?"
Find out what hard-hitting protest anthem you voted to No. 1
Helmet and Russian Circles also set to play
Tom Morello also appears on John Dolmayan's all-star take on "Street Spirit"
Kirk Hammett, Tom Morello, Youth Code and others celebrated in style
Polish musician shreds "Toxicity," "Symphony No. 5" on acoustic guitar
Band even rehearsed cut "once or twice, thinking of releasing it as a System song"
John Dolmayan's These Grey Men project to finally release star-studded debut
Ohio fest's stacked bill also features Bring Me the Horizon, Lamb of God, more