Which e-commerce innovation first allowed music consumers to purchase and download individual songs rather than entire albums, fundamentally disrupting traditional music retail models?

The music industry has undergone radical transformation in how products are sold and consumed. From vinyl records in specialty shops to digital streaming platforms, the evolution of music retail represents one of the most dramatic shifts in consumer experience. This poll tests your knowledge about a pivotal e-commerce innovation that changed how millions of people purchase and listen to music. Can you identify the breakthrough that reshaped the industry's retail landscape?

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Apple's iTunes Store (2003)
Amazon MP3 Store (2007)
Napster's Premium Service (2003)
eMusic Download Manager (1998)