Digital music stores sell copies of digital audio, for example in MP3 and WAV file formats. Unlike music streaming services, which typically charge a monthly subscription fee to stream digital audio, digital music stores download songs to the customer's hard disk drive of their device. The customer will have the copy of the song permanently on their disk, provided the track is not deleted by the customer, the disk does not get physically damaged, or suffers from being corrupted. Major examples of digital music stores include iTunes Store, Amazon Music, Bandcamp and 7digital.[1]
Different platforms may offer a different selection of digital audio, for example, some may only sell music that is of a particular genre, or some may only feature independent content.