Which music retail innovation first allowed consumers to legally purchase and download individual songs instead of entire albums, fundamentally changing the industry's business model?

The music industry has experienced dramatic shifts in how products are sold and consumed over the past few decades. From vinyl records to streaming services, the retail landscape has been completely transformed by technology. This trivia question focuses on a pivotal moment in music retail digital transformation that changed how millions of people purchase and experience music.

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Apple's iTunes Store (2003)
Amazon MP3 Store (2007)
Napster 2.0 paid service (2003)
Microsoft Zune Marketplace (2006)