"One" fuses growling vocals from Max Cavalera with gripping vocals from Ill Nino’s Christian Machado. The song uses this title as first word of the two word clauses per line: 'One soul / One heart / One man / One truth / One tribe / One life / One God'. "L.O.T.M" (acronym for "Last of the Mohicans") is a Native American-themed metal song named after the 1826 novel of the same name. "Brasil" is a Brazilian metal song, especially featuring berimbau, as well as several percussions performed by Cavalera. "Brasil" is about overcoming the poor government of Rio de Janeiro by praying the past.
"One Nation" plays a recorded pledge of allegiance to begin and end the song, since "One Nation" appears in pledge of allegiance. "One Nation" was originally recorded by Sacred Reich. "09-11-01" is a one minute silence used for listeners to tribute to the victims of the September 11th, 2001 terrorism acts on the World Trade Center. "Call to Arms" is about addressing the terrorists in a usual way.
"Tree of Pain" is noted for its ballad lasting 2.3 minutes on both ends with typical metal riff with Cavalera's growls in the middle. This song tributes to Cavalera’s stepson Dana, who was killed. "Zumbi" and "Soulfly III" are world music songs.
Spin (8/02, p. 110) rated the album a 6 out of 10, stating that "There's something undeniably thrilling about an Ozzfest demagogue who champions dignity as a human right and makes a maxim like 'Faith is a weapon' his rallying cry...the band remains a hard-charging, tribal-drumming monster fierce enough to kick the bulldozers out of the rainforest....3 could be the charm for Soulfly."
NME (6/22/02, p. 52) also rated the album a 6 out of 10 stating that "Another clench-jawed grind through seven kinds of hell...Soulfly must be the only band who can make the obligatory minute of Sept. 11th silence seem loud."
Alternative Press (8/02, p. 67) rated the album a 7 out of 10 stating that "Streamlined and digestable...A impenitent tone is set from the start...enough to get the troops of doom marching once again."
CMJ (6/17/02, p. 16) stated that "This one is a winner; don't miss out."