Billy Graziadei

William "Billy" Graziadei (born December 31, 1969) is an American musician who is best known as the lead vocalist, rhythm guitarist, and founding member of Biohazard.[1][2] Graziadei is also the rhythm guitarist and backing vocalist of the band Powerflo and frontman for BillyBio, which is his latest solo project. In addition, he is the former rhythm guitarist for Suicide City.[3][4][5][6] Graziadei also performed as part of the Roadrunner United project in 2005[7] as well as Blood for Blood in 2010.[8]

Billy Graziadei
20140725 Essen Nord Open Air 0212 Biohazard.jpg
Background information
Born (1969-12-31) December 31, 1969 (age 50)
Brooklyn, New York
OriginBrooklyn, New York, United States
GenresHeavy metal, groove metal, alternative metal, rap metal, thrash metal, hardcore punk, crossover thrash
InstrumentsGuitar, Vocals,rapper
Years active1987–present
Associated actsBiohazard, Blood for Blood, Powerflo, Roadrunner United, Suicide City, BillyBio, Museum of Corruption

Additionally, through his music, Graziadei frequently speaks about the realities of inner city life in New York City while promoting tolerance, speaking out against racism and opposing drug abuse.[9][10][11] Graziadei is the owner of Los Angeles-based Firewater Studios.[12][13][1]


In 1987, Graziadei became a member of Biohazard alongside Evan Seinfeld, Anthony Meo and Bobby Hambel.[14] Through their music, the band has promoted tolerance, opposed racism, spoken out against drug abuse all while speaking about the realities of inner city life.[9][10][11]

Other projectsEdit

Firewater StudiosEdit

In 2000, the band renovated their rehearsal space creating a digital recording studio in downtown Brooklyn, New York[15] named Rat Piss Studios.[16] In 2005, while working on Means to an End, their eighth studio album, the band opened the larger and less expensive Underground Sound Studios in South Amboy, New Jersey, leaving Rat Piss Studios behind. In 2010, Graziadei moved his recording space to Los Angeles, California changing its name to Firewater Studios.[17]


Graziadei briefly formed a trip hop project named Blu with Jenifer Bair of the Ohio band Hilo.[18] After writing and recording approximately twenty songs for the project, Bair relocated to Los Angeles, California to continue an art career and the project dissolved with all material, save for three demo tracks, remaining unreleased.

Suicide CityEdit

In 2004, Graziadei started Suicide City with Groovenics singer Karl Bernholtz, Groovenics/Ghost Fight guitarist A. J. Marchetta, Kittie bassist Jennifer Arroyo and New York drummer Danny Lamagna.[19]

Roadrunner UnitedEdit

In December 2005, Graziadei and Evan Seinfeld performed Biohazard's "Punishment" with Dino Cazares of Fear Factory, Andreas Kisser of Sepultura, Adam Duce of Machine Head and Joey Jordison of Slipknot. This recording was released on the Roadrunner United: The Concert DVD three years later.[20]

Blood for BloodEdit

In 2010, Graziadei was selected by Boston hardcore band Blood for Blood to fill in for their former guitarist Rob Lind.[21]


In 2017, Graziadei formed Powerflo, featuring lead vocalist Senen Reyes, better known as Sen Dog from Cypress Hill, lead guitarist Roy Lozano, bassist Christian Olde Wolbers, and drummer Fernando Schaefer. Graziadei is the band's rhythm guitarist and backing vocalist.[22] The band's self-titled debut LP was released on June 23, 2017. A follow-up EP titled Bring That Shit Back followed in June 2018.


In June 2018, it was announced that Graziadei was working on a studio album for his first solo project, BillyBio. The album, titled Feed the Fire, was released on November 30, 2018. BillyBio was asked to be the opening act for Life of Agony's Rise of the Underground tour in Europe October 2018.[23] BillyBio joined Madball on tour for a few shows in early 2019. Billy and his solo project will head off to Europe at the end of May 2019 to play club dates and festivals, such as Antwerp Metal Fest in Belgium and Full Force Festival in Germany.


  • Feed the Fire (2018)[24]

Martial artsEdit

Graziadei has been training in Brazilian Jiu-Jitsu for several years, holding a black belt in the art. He trains under UFC co-founder Rorion Gracie and his sons Ryron and Rener at their school in Torrance, California.[25]


  1. ^ a b "Billy Graziadei - Credits - AllMusic". AllMusic.
  2. ^ NanoRoux. "Biohazard: Biohazard discography, videos, mp3, biography, review, lyrics, photos, line up - Metalship encyclopedia".
  3. ^ "Billy Graziadei Biography & Awards" Obtained December 7, 2011
  4. ^ "Yahoo!".
  5. ^ "Suicide City Biography & Awards" Obtained December 7, 2011
  6. ^ "BLABBERMOUTH.NET - SUICIDE CITY Video Interview Posted Online" BLABBERMOUTH.NET Obtained December 7, 2011
  7. ^ "Roadrunner Records Latest News". Roadrunner Records Official Website.
  8. ^ "BIOHAZARD Guitarist To Tour With Reunited BLOOD FOR BLOOD" June 20, 2010 Obtained December 9, 2011 Archived July 1, 2010, at the Wayback Machine
  9. ^ a b "Biohazard Black and White and Red All Over 歌詞".
  10. ^ a b "Biohazard - Biography, Albums, Streaming Links - AllMusic". AllMusic.
  11. ^ a b "Urban Discipline - Biohazard - Songs, Reviews, Credits - AllMusic". AllMusic.
  12. ^ ""WELCOME TO FIREWATER STUDIOS" Firewater Studios Obtained December 12, 2011". Archived from the original on April 26, 2012. Retrieved December 12, 2011.
  13. ^ ""Timothy Waite Named Head of Production at Hermosa Beach Venue Saint Rocke" Musicians Institute, December 06, 2011 Obtained December 12, 2011" Firewater Studios Obtained December 12, 2011". Archived from the original on 2012-08-05.
  14. ^ "Sunday Old School: Biohazard".
  15. ^ "Archaic Magazine".[permanent dead link]
  16. ^ "PITCHFORK NY".
  17. ^ ""FIREWATER STUDIOS" Firewater Studios Obtained February 5, 2012". Archived from the original on April 26, 2012. Retrieved February 5, 2012.
  18. ^ "Archive News Oct 02, 2001". 2 May 2017. Retrieved 23 February 2018.
  19. ^ "SUICIDE CITY: Video Interview Posted Online", November 23, 2009 Obtained December 20, 2011
  20. ^ "New Roadrunner United DVD Clips Posted Online".
  21. ^ "BIOHAZARD Guitarist To Tour With Reunited BLOOD FOR BLOOD", June 20, 2010 Obtained December 20, 2011 Archived July 1, 2010, at the Wayback Machine
  22. ^ "POWERFLO Feat. BIOHAZARD, CYPRESS HILL, Ex-FEAR FACTORY Members: 'Resistance' Lyric Video". 2 May 2017. Retrieved 10 May 2017.
  23. ^ "BIOHAZARD's BILLY GRAZIADEI Is 'Psyched' To Release Solo Music As BILLYBIO". 2018-06-12. Retrieved 2018-09-03.
  24. ^ "BIOHAZARD's BILLY GRAZIADEI To Release BILLYBIO Debut, 'Feed The Fire', In November". 9 October 2018.
  25. ^ "Certified Belt Holders - List by Training Center".

External linksEdit