Apple Inc., the company that popularized selling songs online for 99 cents apiece, now hopes to buoy interest in albums, giving customers credit for purchases of full albums from which they have bought individual tracks.

Apple introduced the “Complete My Album” feature Thursday on its iTunes Store. It now gives a full credit of 99 cents for every track the user previously purchased and applies it toward the purchase of the complete album.

For instance, most albums on iTunes cost $9.99 so a customer who already bought three tracks can download the rest of the album for $7.02.