Sylvia Massy

  • Tool
  • System Of A Down
  • Johnny Cash
  • Red Hot Chili Peppers


Sylvia Massy is an American entrepreneur, music producer, mixer and engineer, writer and artist based in the United States. Massy is perhaps best recognized for her work on 1993’s Undertow, the full-length double platinum-selling debut for Los Angeles rock band Tool and her works with System of a Down, Johnny Cash and the Red Hot Chili Peppers.

While working at Larrabee Sound in West Hollywood, Sylvia connected with producer Rick Rubin and would work with him on several projects including Tom Petty and the Heartbreakers, Slayer, Donovan, Geto Boys, The Black Crowes, Danzig, and System of a Down’s debut album, as well as Johnny Cash’s album Unchained, which won a Grammy award for Best Country Album in 1997. Further into the ’90s, Massy continued to produce many popular artists, aforementioned Red Hot Chili Peppers, Sevendust, and Powerman 5000, which featured guest appearances from Rob Zombie and actor Malachi Throne from Star Trek fame. In 1997 alone, Massy co-produced, engineered and mixed Foo Fighters, Björk, Patti Smith, Sonic Youth and for the Beastie Boys’ « Tibetan Freedom Concert » in New York with Adam Yauch and producer Pat McCarthy.

Also during her time in Los Angeles, Massy engineered, produced or mixed on recordings from a diverse group of internationally-known artists, including Aerosmith, Babyface, Big Daddy Kane, Bobby Brown, Prince, Julio Iglesias, Seal, Skunk Anansie, Paula Abdul, Ryuichi Sakamoto and many more. Not to mention her work with manager Gary Kurfirst on Irish rock band Cyclefly for Kurfirst’s Radioactive Records. Massy’s repertoire is far and wide, giving her a continuously competitive edge and ability to create with artists across genres and decades.

Sylvia Massy

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