Which music industry digital transformation innovation first allowed legal per-track purchases instead of requiring consumers to buy entire albums?

The music industry has undergone radical digital transformation in the past two decades, revolutionizing how music is produced, distributed, and consumed. From physical media to streaming platforms, from record stores to algorithm-based recommendations, the industry continues to evolve with technological advancements. Test your knowledge about one of the most significant technological shifts that changed how music reaches audiences worldwide.

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Apple's iTunes Store (2003)
Napster's peer-to-peer service (1999)
Spotify's streaming platform (2008)
Amazon's MP3 Store (2007)