Windows Phone is a love and hate relationship for the music lover. There is nothing nearly as good as Itunes on Windows Phone(or Android) for that matter. However, Windows Phones have something Itunes doesn't, and that's a full band audio equalizer with Dolby Enhancement and Audio Leveling. To the audiophile, that's a huge bonus that overrides any well designed music player.
What music lovers want is full customization of their music collection, big album art and all the features such as building playlists. I for one am tired of Cloud Music being pushed down our throats. It's good for backing up your music but I want to own my music and access it whenever I want, rather than be at the mercy of my internet connection or data plan. That is another failure of Windows Phone - not giving us 64gb storage options on their flagship phones(with the exception of the HTC 8XT).
The most customization I get with music collections is using Nokia Music(or Xbox Music) and using the desktop app to sync Itunes. Both of those apps are very similar, but I like the live tiles that Nokia Music provides better than Xbox Music. But I also feel like Xbox Music runs faster/smoother. My main problem with either of those apps are the layout/design. I don't like how when you open the app, it doesn't take you right to your collection. I don't want to have to scroll through a bunch of nonsense to see my albums. Nokia desperately needs to redesign their music player and add more customization.