He also helped compose some of the music to the video game Metal Gear Solid 2 : Sons of Liberty , and composed the theme music for the BBC 's Seven Wonders of the Industrial World in 2003 . In addition , he helped compose some of the music to the video game Metal Gear Solid 2 : Sons of Liberty , and composed the theme music in 2003 for the BBC 's Seven Wonders of the Industrial World .