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|Also known as||Leo Ross|
|Occupation(s)||Musician, record producer, recording engineer|
|Labels||Epithaph, S2, Reprise, Iamsound, Sargent House, Sacred Bones|
|Associated acts||Io Echo, Error, Nojahoda, Fear and the Nervous System, The Big Pink, Atticus Ross, Claudia Sarne, Bobby Krlic, Harry Gregson-Williams|
In 2003 he joined his brother Atticus Ross, as well as Bad Religion member Brett Gurewitz in the punk/hardcore band Error. Along with temporary vocalist Greg Puciato, the band recorded and released a well received EP on Epitaph Records in 2004. Around this time Leopold also began his scoring career, composing the music for the USA Network show Touching Evil alongside Atticus Ross and Claudia Sarne.
Leopold has since gone on to score numerous motion pictures and television shows, beginning in 2009 with the Hughes brothers' movie The Book of Eli. In May 2010 this score won a BMI film music award.
Outside of his scoring work, Leopold has written, recorded, produced and performed with various noted acts including Bad Religion, Grace Jones, Korn, Dillinger Escape Plan, Rancid, The Transplants, Five Finger Death Punch, Brigitte Fontaine, The Big Pink, Io Echo and Brett Anderson.
Ross has five siblings, including model Liberty Ross and Atticus Ross, who is also a musician. His maternal grandfather was Miles Lampson, 1st Baron Killearn. He is of Italian descent through his great-grandfather, Aldo Castellani.
|Band, artist, show or movie||Song or album||Year||Credits|
|Nojahoda||Jahoda Witness||1999||Guitar, vocals|
|Error||Error EP||2004||Guitar, programming|
|Bad Religion||Beyond Electric Dreams||2004||Sonic Alienator|
|Touching Evil||Music to accompany series||2004||Co-writer, guitar, production|
|Korn||See You on the Other Side, Tearjerker||2005||Producer, production assistant, co-writer (Tearjerker)|
|The Notorious B.I.G.||Duets: The Final Chapter||2005||Production assistant|
|Grace Jones||Devil In My Life||2008||Co-writer, guitar|
|Five Finger Death Punch||Never Enough||2008||Co-writer|
|New York, I Love You||Movie soundtrack ("Allen Hughes" segment)||2009||Co-composer|
|The Book of Eli||Movie score||2010||Co-composer, Performer|
|Fear and the Nervous System||Fear and the Nervous System||2011||Programming, guitar, co-producer, co-writer|
|Io Echo||Ministry of Love||2013||Producer, guitar, co-writer|
|Broken City||Movie score||2013||Composer, With Atticus Ross & Claudia Sarne|
|Blackhat||Movie score||2015||Composer, With Atticus Ross|
|Love & Mercy||Movie score||2014||Composer, With Atticus Ross|
|Triple 9||Movie score||2016||Composer, With Atticus Ross, Claudia Sarne & Bobby Krlic|
|Almost Holy||Movie score||2016||Composer, With Atticus Ross & Bobby Krlic|
|The Defiant Ones||Movie score, Documental||2017||Composer, With Atticus Ross & Claudia Sarne|
|Death Note||Movie score||2017||Composer, With Atticus Ross|
|Black Mirror||'Crocodile' score||2017||Composer, With Atticus Ross|
|Corazón||score||2018||Composer, With Atticus Ross|
|A Million Little Pieces||score||2018||Composer, With Atticus Ross|
|Earthquake Bird||score||2019||Composer, With Atticus Ross|
- Ryan, Larry (10 December 2010). "Caught in the Net: Still living in perfect harmony". The Independent. Retrieved 3 January 2011.
- Buckley, Cat (30 October 2013). "The Liberty Ross Family: Meet the Oscar Winners, Scientists, and Rock Stars Related to the Model". Vanity Fair. Retrieved 2 February 2020.