I've been using it for a year so it isn't unusable. They fixed it.
I don't feel like listing the problems with the iPad music app in detail here, but they took away a lot of functionality that was there in iOS 5, and never put it back. One glaring omission: no lyric display
On iOS 5, I used to listen to music on my iPad all the time. But on iOS 6, the music player is so miserable to use, I almost never use it anymore.