I will admit, I listen to very conservative Christian radio, and probably would not be everyone's cup of tea. I listen to Rejoice radio broadcast from Pensacola Christian College. It is close to where I live, but they have stations across the country and are online. It's a lot of old fashioned kind of music, but I like it and their programming.
I think the a capella groups they play are the best. I grew up singing hymns, so this is my preference.
This kind of thing is what I like best that they play:
[video=youtube;MWOvD06hJqM]https://www.youtube.com/watch?v=MWOvD06hJqM[/video]