Any iOS 8.4 users have the chance to enjoy the 3 month free trail of new Music streaming services on their iDevices. The thing they should to do is just to sign up to be one of Apple Music members and choose one pay between $9.99 for individual plan or $14.99 for family plan. However, you will auto pay for the membership after 3 month trial. Of course, you may not want to just like Europa said below
“I don’t plan on continuing with Apple Music once the free trial is over”, Europa said at everythingiCafe iOS 8 forum.
Then, how do you turn off Apple Music Streaming Service after free trial?
Actually, it is simple to stop auto-pay.
Tap upper-left head pic at Apple Music app > View Apple ID > Manage Subscriptions > Now you can disable automatic renewal.