Soulfly is an American heavy metal band formed in 1997 and based in Phoenix, Arizona. The original lyrical content revolved around spirituality, political and religious themes, with later albums encompassing other themes including war, violence, aggression, slavery, hatred and anger. Soulfly is led by former Sepultura frontman Max Cavalera, who formed the band after he left the Brazilian group in 1996. To date the band has released ten studio albums, one tour EP, twenty-three singles, one video album, and twelve music videos.

Cavalera was troubled during the recording of Soulfly's self-titled album, and on the band's website he said that he founded the band "with the idea of combined sounds and spiritual beliefs". As well as leaving Sepultura, one of the world's most renowned thrash/groove metal bands, he had to deal with the death of his stepson and best friend Dana Wells. The self-titled debut album was released in April 1998, and reached number 79 on the Billboard 200.  In addition to the core band, which at the time consisted of Lucio Maia (Jackson Bandeira) on guitar, Cello Dias on bass, and Roy Mayorga on drums, Soulfly featured Burton C. Bell, Dino Cazares and Christian Olde Wolbers from Fear Factory, Fred Durst and DJ Lethal from Limp Bizkit, Chino Moreno from Deftones, Benji Webbe formerly of Welsh band Dub War and now a member of Skindred, Eric Bobo from Cypress Hill, Jorge do Peixe and Gilmar Bola Oito from Chico Science & Nacao Zumbi, and Mario C.. The album was recorded at Indigo Ranch Studios in Malibu, California and was overseen by producer Ross Robinson.  In addition to fronting Soulfly, Cavalera also branched out into other areas not usually associated with heavy metal musicians. He became a speaker at music conventions, appearing at CMJ's New Music Marathon in New York and Holland's Crossing Border Festival, both in late 1997, and sang a TV commercial for Sprite in Brazil. After recording the first album, Jackson Bandeira returned to Brazil with Nacao Zumbi and was replaced by Logan Mader of Machine Head for the live tour that followed. Soulfly played on the 1998 Ozzfest mainstage alongside Ozzy Osbourne, Megadeth, and Tool, and played small club tours around the world with bands such as System of a Down and Snot. After the world tour in support of Soulfly, Logan Mader was replaced by Mikey Doling who had just been displaced by the breakup of Snot.  A variety of influences, including nu metal, appeared on 2000s Primitive, and it was the most successful album by the band in the U.S., reaching number 32 on the Billboard 200 and number 11 on the independent charts. Joe Nunez, from Chicago, replaced Roy Mayorga on drums for Primitive. The album featured a number of guest appearances as well, including Corey Taylor of Slipknot and Stone Sour, Sean Lennon, Chino Moreno of Deftones, Tom Araya of Slayer, Grady Avenell of Will Haven, Cutthroat Logic, Babatunde and Asha Rabouin and was produced by Toby Wright. In addition, artwork was created by longtime Bob Marley artist Neville Garrick. The release of the album was followed by world tours with the likes of Pantera, Morbid Angel and Ozzfest.  In late 2001, Joe Nunez left Soulfly to join Stripping the Pistol, saying that it was "time for [him] to move on". Roy Mayorga departed from his band Medication to rejoin Soulfly for the recording of their third album. 3 was the first Soulfly album which was produced by Max Cavalera. Other musicians performing on 3 included Cristian Machado of Ill Nino, and guitarist Wiley Arnet and drummer Greg Hall, and Max's stepson Richie Cavalera. The album reached number 46 on the Billboard 200 in that year. After the release of 3 on June 25, 2002, Soulfly toured throughout Europe and North America with bands such as Slayer, In Flames, God Forbid, and Will Haven.  In September 2003, after the world tour for 3, Marcelo Dias was fired from the band, and Mikey Doling and Roy Mayorga both left the band in protest, leaving Cavalera as the sole remaining member for a period of three weeks.  Cavalera recruited a new lineup in October 2003 for the recording of Soulfly's Prophecy album. Joe Nunez returned on drums with New Jersey native Marc Rizzo, formerly of Ill Nino, on guitar and Kentucky native Bobby Burns, formerly of Primer 55, on bass. David Ellefson, formerly of Megadeth at the time, also played bass on several of the album's songs.  Max Cavalera explained on the band's website that he wanted to use different musicians as part of the group for each album. "This is an approach that I've wanted to do for a while. I never wanted Soulfly to be a band like Metallica, with the same four guys. On every Soulfly album, we've changed the line up and it will probably continue that way. In order to do that, I had to start from the inside out and bring in people who caught my attention, that I had never played with before, and create this." While a member of Sepultura, Cavalera had shown an interest in world music as shown in Roots, featuring elements of the music of Brazil's indigenous peoples. This approach continued on the Prophecy album, with Cavalera traveling to Serbia to record with traditional musicians. On the song "Moses", he worked with Serbian band Eyesburn, which also features reggae influences from one of his heroes, Bob Marley. Other tracks on the album feature instruments from the Middle Ages, sheepskin bagpipes, and Serbian Gypsies. Danny Marianino and Asha Rabouin returned as guest vocalists on Prophecy, as well, and Max Cavalera produced the album. Prophecy was released on March 30, 2004 and in April of that year had reached a peak of number 82 on the Billboard 200, although it has reached the top 50 of the Australian album charts. Soulfly followed the album release with tours supporting Black Sabbath and Morbid Angel.  In February 2005, Soulfly released their first DVD, entitled The Song Remains Insane. This was a biography of the band, containing live footage from all over the globe, interviews, and all of the band's music videos. In August 2005, Roadrunner Records reissued their self-titled first album as part of the label's 25th anniversary celebration.  In August 2007, Soulfly did a tour that consisted of a mixture of festival and club shows through Europe before playing the 11th Annual D-Low Memorial Show in Tempe, AZ on August 31, 2007. Cavalera Conspiracy also made their debut live performance at the show by opening for Soulfly. One week after performing the show, Soulfly went to Bobby Burns and Tim Lau's newly renovated Porch Studio in Orlando, FL to begin work on their sixth studio album, which Cavalera had begun writing during the summer. After working halfway through recording until September 29, Cavalera halted the session to travel throughout Egypt to record more sounds to integrate into the new songs. In November 2007, Cavalera returned to Orlando to complete tracking and the album was mixed by Andy Sneap in early 2008. The album featured collaborations Dave Peters from Throwdown and David Vincent from Morbid Angel.  Soulfly released their sixth album entitled Conquer on July 29, 2008. Following the release of the album, the band toured the United States with Devastation and Bleed the Sky in the fall, toured Europe in winter of 2009 with Incite, played a small UK and European festivals during the spring and summer of 2009, and went on a fall 2009 U.S. headlining tour with Cattle Decapitation, Prong, and Mutiny Within.  Soulfly entered the Edge of the Earth Studios in Los Angeles, California on November 6, 2009 to begin recording their seventh album with Max Cavalera and Logan Mader both producing. Through a series of streaming web video updates, frontman Max Cavalera revealed on November 13, 2009 that the album would be called Omen and would feature guest appearances by Tommy Victor of Prong and Greg Puciato of The Dillinger Escape Plan. Additionally, the album features performances on drums from Max's sons: Zyon Cavalera on a b-side cover of Sepultura's "Refuse-Resist" and Igor Cavalera (not to be confused with his brother of the same name) on a cover of Excel's "Your Life, My Life". Omen has been released worldwide on May 25, 2010.  From May 13 - December 16, 2010, Soulfly conducted a world tour in support of their new album Omen.  On July 18, 2010, bassist Bobby Burns posted following message on his Twitter profile: "To all the fans... SOULFLY and I have decided to part ways. Stay tuned for my next projects already in the works. Thanks 4 ur support!!!" Answer this question using a quote from the following article:

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