The band is Soulfly. The singer/guitar player is Max Cavalera. He is the founding member of Sepultura, but left that band in the late 90's after a dispute. He formed Soulfly after his departure from Sepultura. He uses different artists for all studio releases to avoid a "Stale" sound. Interesting story actually. I'm sure it's on wikipedia. Anyway, this song is entitled "Moses". Hope you enjoy.