Rap sound track. Nope,nope,nope. The other problem I have with that,aside from hating rap is it dates the game to a certain time period. It's no longer set in the future,it's set right now due to the sound track. Note the music in Skyrim makes it harder to place in a given time. It holds up.
One can also see this in sf novels where profanity,which changes over time,also dates the book one is reading to a given time. Some writers get around this by making up their own profanity, which works for me,but i digress.