Marc Urselli (born January 31, 1977 in Aarau, Switzerland) is an Italian-Swiss freelance New York City & London-based audio engineer, music producer, mixing engineer, live sound engineer, remixer, sound designer, composer, musician, contributor, and blogger. He has been nominated for a Grammy Award seven times and he has won the award three times. He is best known for his work as a recording and mixing engineer (live and in the studio) in the genres of rock, jazz, metal, pop, avantguarde/experimental and contemporary/new music with artists such as Lou Reed, Nick Cave, Mike Patton, U2, Elton John, Kesha, Joan Jett, Les Paul, Jack DeJohnette, John Patitucci, Esperanza Spalding, John Zorn, and Laurie Anderson. Career He has recorded most of John Zorn's albums since 2007 and albums for Zorn's label Tzadik. As of the end of 2020 he had recorded over 120 albums for Tzadik, of which more than 85 by John Zorn alone. In 2020 the album "AngelHeaded Hipster: the Songs of Marc Bolan & T.Rex" album recorded & mixed by Urselli and produced by Hal Willner was released by BMG. The album features 26 tracks including among others Nick Cave, U2, Elton John, Kesha, Joan Jett and many others. In 2005 he recorded and mixed the Les Paul's 90th birthday tribute album Les Paul & Friends: American Made World Played (Capitol 2005) featuring Les Paul himself. The album won two Grammy Awards at the 48th Annual Grammy Awards for Best Rock Instrumental Performance and Best Pop Instrumental Performance. Urselli also worked as a recording engineer on the Mexican-American singer Lila Downs' 2004 album "Una Sangre (One Blood)" (Narada 2004), which won a Latin Grammy in the category of Best Contemporary Folk Album at the 2005 Latin Grammy Awards. Other albums nominated for a Grammy Award that Urselli worked on include the 2020 Terri Lyne Carrington & Social Science album "Waiting Game" in the category of Best Jazz Instrumental Album, the 2019 Claudia Acuña album "Turning Pages" in the category of Best Latin Jazz Album, the 2011 Laurie Anderson album "Homeland" (nominated for Best Pop Instrumental), the 2004 Roy Hargrove "Strength" (Best Contemporary Jazz), which was released under the artist name "RH Factor" and was produced by Brian Bacchus. In 2016 and 2017, Urselli has also worked as a sound engineer for two operas by for Beth Morrison Productions: "Aging Magician" with music by composer Paola Prestini and featuring singer/librettist Rinde