Seifert has scored independent films and major motion pictures, including composing, arranging, recording, and production work on Bram Stoker's Dracula (Special Edition), The Outsiders : The Complete Novel, Heart of Darkness, and The Godfather trilogy FFC restoration special edition for Francis Ford Coppola and the award-winning documentary, Romeo is Bleeding.
Seifert has been involved in a range of film projects, including independent films and major motion pictures. He has handled various roles such as composing, arranging, recording, and producing work on notable titles like Bram Stoker's Dracula (Special Edition), The Outsiders : The Complete Novel, Heart of Darkness, and the restored version of Francis Ford Coppola's The Godfather trilogy, in addition to the acclaimed documentary Romeo is Bleeding.