Custom game music

Ok, I enjoy building maps and playing them as many people do, but I think the ability to add an In game track to a map to set the mood would be cool, For example im playing a custom invasion map and the game settings have the music set to that track when the elites try kidnapping the humans in reach, or im playing infection and put on that creepy flood theme from halo CE. Of course ther would be an option for each player to mute the song. I feel this would make custom games more fun and add a setting for maps that desire one. Good Idea? yes or no.

what to add in original halo music not the halo 4 crap

mike myers!!!