Shortly after moving to Los Angeles, Sonny landed an apprenticeship for British record producer, Flood and 30 Seconds to Mars. Excited by the experience and atmosphere of the studio, he went to London to continue his work with Flood and Alan Moulder. Since returning to Los Angeles, he has worked in-house as an engineer for Trent Reznor, My Bloody Valentine, M83, Dave Sardy, David Longstreth.

As a producer, engineer and mixer, he has worked alongside artists such as These New Puritans, Deradoorian, Protomartyr, Gossamer, La Femme, Animal Collective, Portugal. The Man, Lord Huron, Emma Ruth Rundle, The Drums, Dirty Projectors, Big Wild, STRFKR, Hanni El Khatib, Avey Tare, מזמור [mizmor] and more.