Harry Gregson-Williams is a games composer who started the games industry career in 1900. Since then, Gregson-Williams has been working with Activision, Beenox, Infinity Ward and Kojima Productions. Gregson-Williams's first game was Ratropolis published by Cassel Games for PC. Then, Harry Gregson-Williams went on to work on Ong-Bak as the composer. Later, Gregson-Williams also was part of the team who developed Metal Gear Solid 3: Snake Eater published by Konami for Nintendo 3DS, Xbox 360, PlayStation 3 and PlayStation 2. Most recently, Harry Gregson-Williams was involved in the development of Call of Duty: Modern Warfare (2019).