Gregory Calbi is an American mastering engineer at Sterling Sound, New Jersey.
Calbi in 2014
Note to Greg from John Lennon
George Marino was an American mastering engineer known for working on albums by rock bands starting in the late 1960s.
Marino in 2007
The Chancellors (left to right): Bijan Yakuboff, Don Grassini, Ronnie Salvani, Nick DiMinno, George Marino
Capitol Studios letter regarding the mastering of the 7-inch 45 RPM single of "Hey Jude"
George and Rose Marino