Joel Nielsen Is A Canadian Composer. Among Other Less Known Works Nielsen Has Written The Soundtrack For A High Profile Game Modification Mod For Valve's 2004 PC Game Epic Half-Life 2 Black Mesa Which Recreates The Storyline Of The Original 1998 Half-Life In The Newer Game's More Complex Detailed And Advanced Engine. The Mod Features Models And Textures Built From The Ground Up And New Original Music And Themes By Nielsen.