William J. Sullivan is an LA based composer, producer and engineer who has worked on a range of productions including Film and T.V. scores to engineering and producing albums.  His career started at Studio 4 outside of Philadelphia, PA and continued in 2008 when he opened Wreckin' Joint Productions LLC, during his time in New York City.  He is a proud member of ASCAP and NARAS.

Some previous roles in productions are:

• Tracking, Mixing and Mastering Engineer
• Composer
• Producer
• Project Manager
• Studio Manager 
• Mobile Recording/Production
• Music Editor
• Audio Tech
• Server/Systems Tech

Past projects include: "Kids See Ghosts", "the Life of Pablo", "Kanye West Presents: Cruel Summer", "Watch The Throne", "Rampage" OST, "Lady In The Water" OST, "North Country" OST and many more.

William currently writes for the music libraries, 4 Elements Music, Haus, Jingle Punks, HUM and Score A Score and runs the independent record label Wreckin' Joint Productions.