Which digital music retail innovation was first introduced in 2003, revolutionizing how consumers purchased and owned music, ultimately selling over 25 billion songs before being phased out?

The music retail landscape has dramatically evolved over the past few decades. From vinyl record stores to digital streaming platforms, the industry has experienced one of the most profound digital transformations in retail history. This poll tests your knowledge about a pivotal moment in music retail's digital evolution that changed consumer behavior forever.

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Apple's iTunes Store individual song downloads
Spotify's premium subscription model
Amazon's MP3 Store
Bandcamp's artist-direct sales platform