<P> It was announced on November 9, 2015 that Black Ops would become backwards compatible with the Xbox One . It was originally meant to be available for backwards compatibility in December 2015, but the date was later changed to some time in 2016 . Black Ops was originally the sixth-most requested Xbox 360 title to become backwards compatible with the Xbox One . On May 17, 2016, the game was made available through Xbox One's backward compatibility . Shortly after, it was reported that sales of the Xbox 360 version had increased by 13,000 percent . </P> <P> Black Ops features the voices of Sam Worthington as Alex Mason, Ed Harris as Jason Hudson, Gary Oldman reprises his role as Viktor Reznov from World at War and also voices Dr. Clarke, James C. Burns voices and provides performance capture for Frank Woods and Ice Cube voices Joseph Bowman, who is also the multiplayer announcer for the SOG faction . Gene Farber voices Grigori Weaver, Emmanuelle Chriqui plays a live - action character called Numbers, Eamon Hunt voices Nikita Dragovich, Andrew Divoff voices Lev Kravchenko and Robert Picardo voices Secretary Robert McNamara . Dimitri Diatchenko, an American born actor and musician voices the Spetsnaz faction and several other characters due to his strong Russian accent . </P> <P> Call of Duty: Black Ops features Vietnam War era music including "Sympathy for the Devil" by The Rolling Stones (played during a gameplay sequence, the credits, and as an easter egg in the multiplayer map Nuketown) and Creedence Clearwater Revival's "Fortunate Son". Eminem's "Won't Back Down" (featuring Pink) is used for the credits as well, and additionally appears as an Easter Egg in the Zombie map "Five". In the Call of the Dead zombie map the song "Not Ready to Die" by American heavy metal band Avenged Sevenfold is featured as an easter egg . The original music was composed by Sean Murray, who also composed Call of Duty: World at War while Kevin Sherwood composed music for the Zombies mode . The soundtrack was released on November 9 . The use of The Rolling Stones' music in the game has seen a significant increase in the band's music sales since launch . "Gimme Shelter" sold 2,000 copies in the week before the launch trailer was revealed, 5,000 the week after, and 11,000 the week after the game's release . "Sympathy for the Devil" experienced a similar boost as gamers discovered the band's music . </P> <P> The game's score was composed by Sean Murray, and the official soundtrack was released on November 9, 2010 . In addition, a soundtrack for the popular Zombies mode was released on January 25, 2011 . </P>

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