 He has produced and/or engineered for artists including Bobby McFerrin, Bob Dylan, Eric Andersen, Loudon Wainwright III, Jeff Buckley, Gary Lucas, Lara Bello, Richard Barone, The Bongos, Robby Romero and Red Thunder, Richard Shindell, Ana Egge and The Stray Birds, Chiara Civello, Jane Olivor, Olivia Newton-John, The Manhattans and Dar Williams.Addabbo is also an acclaimed mix engineer who has, among other projects, mixed the Bob Dylan box sets "" and "" for which he received a Grammy Award.More recently he has mixed the Dylan Bootleg 13, Trouble No More and Bootleg 14, More Blood, More Tracks

He owns Shelter Island Sound Studios located in Manhattan, New York.