This app was mentioned in 2 comments, with an average of 2.00 upvotes
Yeah been using it for years and while I tried a lot of other music players I always came back to Poweramp. Also with the Material skin it's everything I want from a music player.
I also like this transparent skin:
https://play.google.com/store/apps/details?id=com.ikorolkov.poweramp.skins.flat.transparent
With the right wallpaper it looks really awesome.