Requires iOS 8.4.
Enables rotation in the Music app on iOS 8.4. Apple disabled rotation by default in the Music app (except on iPad's) and did not give an option to enable it.
No options to configure.
Known Issues (both appear to be the way Apple has made the Music app):
* May cause Music app crash on iPhone 6/6+.
* There is an issue when in now playing on landscape that causes the album art to be small.