Bill Brown IV is an American composer of music for video games, films and television. His work appears on Microsoft's Windows XP operating system, as creator of the system sounds, and as music for the tour software. His father was New York City radio disc jockey, Bill Brown (III).

Quake II is a 1997 first-person shooter video game developed by id Software and published by Activision. It is the second installment of the Quake series, following Quake. The game's storyline is continued in its expansions, including one tying in Quake II and the first game, and Quake 4.