Music Style Guide updates.

Music Style Guide Update
The Music Style Guide has been updated to better reflect our metadata standards for music on the iTunes Store and Apple Music. Make sure to take note of the Overview and General Guidelines sections, as these define the most critical guidelines to consider when preparing your content for delivery. We’ve added a revision history, and translated versions of the guide are available in French, German, Japanese, Simplified Chinese, and Spanish.

In this version, new guidelines have been added for:

For more information on what's been changed, see the Music Style Guide.