Why can’t I share music from Apple Music?

• To share Apple Music content with other subscribers, you can share a link to specific content.
• To share an Apple Music playlist with other subscribers, you can share a link to that playlist.
• To share your Apple Music profile, what you are listening to, with other Apple Music subscriber friends, activate that sharing with friends option.

Apple Music subscription content is protected against unauthorized use, e.g. sharing audio files. Apple Music subscription content for offline use has to be downloaded to each associated device from Apple’s servers (to check the subscription). Apple Music content is supported exclusively on devices that are registered with an Apple Music subscription.

If you want to use music tracks in a broader sense, then you can purchase music content in the iTunes Store.