In the iOS 8.4 Music app how do I only show downloaded music?
The easiest way I've found to do this is in the iPhone iTunes app click on the "my music" button, then it will say Artist in red and there's a red down pointing arrow next to it. If you click that, there is a drop down to turn on " Only Downloaded Music". Turn that button to green and the music that isn't downloaded will disappear. Hope this helps.