Mario J. McNulty ( born 1978 ) is a Grammy Award-winning music producer and audio engineer based in New York City . He has worked with David Bowie , Prince , Julian Lennon and many other well-known recording artists . At the 50th Annual Grammy Awards , along with artist Angélique Kidjo and producer Tony Visconti , Mario J. McNulty won a Grammy in the Best Contemporary World Music category for the album '' Djin Djin '' ( 2007 ) . Other Grammy-nominated albums include '' Homeland '' by Laurie Anderson in 2009 and '' The Next Day '' by David Bowie in 2013
50th Annual Grammy Awards
50th Annual Grammy Awards
Mario J. McNulty