How to redeem:
* Open the Apple Music app.
* Tap the menu button. , then tap Account.
* Tap "Redeem Gift Card or Code."
* Enter the 16-digit code that begins with X. Then tap Redeem.

Notes:
You will receive the code instantly by email.
No refund on digital products.
No exchange for ordering the wrong region or type.
Exchange is allowed only if the code was invalid.