GhostofBiedny
Celestial
If one is going to use music, I'd recommend it be played in low volume so beats snares and yelling don't bleed over the conversation, Also, Use something from this guy, Ross Bugden, all of his stuff is copyright free and made for such uses, Ross Bugden - Music
Remember, Music can set the atmosphere, but you can't depend on it to carry a show, It should be a low volume ambience thing at best.
Music should only be used for intros and brief interludes not during the actual discussion. There is no need to have background music.