Among the artists’ projects he has worked on are: James Taylor, David Bowie, Aerosmith, Kiri Te Kanawa, Aimee Mann, Miles Davis, Kimbra, Thelonius Monk, and Nirvana. His project Invention and Alchemy received a Grammy Nomination in 2005.

Among many restoration projects credits include the Sherlock Holmes series - BBC TV, the first opera recording - Madame Butterfly ca 1912 for the New Zealand Archive, forensic work for the US gov’t,  live concert recordings for the Bill Graham Archive, re-issues for Sun Records, Rounder Records and for major recording artists including Alison Krauss and The Shaggs.  He's authored,  ‘Audio Mastering: Essential Practices’ published by Hale Leonard/Berklee Press and online courses for BerkleeMusic online. With the iZotope team he authored and developed ‘Pro Audio Essentials’, an online ear training site that garnered a TEC award in early 2017.

Jonathan hosts ‘Are You Listening?’ And ‘Headroom’,  online educational series on iZotope’s website.