I only listen to Christian music (except when I am with my fiancee in the car. She doesn’t listen to anything but Country). While I listen to a wide variety of Christian music, my primary concern is that they be doctrinally sound. That is, songs that do not accurately portray God (sorry, His love is not “reckless”) or give are easily confused with a modern love song should you remove the context are not going to make it into my library of music. I also especially enjoy hymns, but the same standards apply.  More often than not, I listen to ambience, which is a series of sounds intended to set the tone as if the listener were in a particular setting. As an example, someone may play the sound of a fireplace crackling and wind howling to set the mood as though you, the listener, were by a fireplace on a cold, windy winter night.