There are some more options for you to hear even more Christian music online now. Crosswalk Radio has launched and has a load of different channels/stations for just the style of music you were wanting to hear.
I’m currently listening to the “Christian Classics” station and am hearing 2nd Chapter of Acts “Love, Peace, Joy”. Quite the flashback. Good stuff though, you don’t hear this on the radio all the time, that’s for sure. The next song up was Billy Sprague “Waiting for the Day”.