Pre-adds allow customers to listen to one or more songs from a playlist before it is available for sale. Additionally, this feature will automatically add the playlist to their library once it is available for sale.
To successfully pre-add a playlist it must be delivered as a regular pre-order for the iTunes Store, with at least one instant-gratification track included.
Your playlist and songs must:
For more information about instant-gratification tracks, see the iTunes Connect Music Rights and Pricing User Guide.