With one push of a button you can add an entire album to "Your Music" but there is not an inverse operation to remove it. Therefore if you accidently add a whole bunch of songs to a list it may take you a hundred edits to remove the same songs. This is absurd and indicates that your UI designers are not spending enough time in the usability phase of implementing a major change to the UI. Gimme a break! You need to add a better Usability Testing Phase to your development work flow. Otherwise somebody would have caught this critical flaw in your UI.
A screenshot is attached: I should be able to removed an entire block of songs from this list in one edit.