Which streaming service innovation fundamentally transformed music retail by introducing the 'freemium' model that converted millions of music pirates into paying subscribers?

The music industry has undergone massive digital transformation in the past two decades. From physical albums to downloads to streaming, the way consumers access and pay for music has fundamentally changed how artists and labels generate revenue. This poll tests your knowledge about a pivotal moment in music streaming history that dramatically shifted consumer behavior and industry business models.

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Spotify's ad-supported free tier with premium subscription option (2008)
Apple's iTunes Store introducing individual song purchases (2003)
Pandora's algorithm-based radio streaming service (2005)
YouTube Music's integration of music videos with streaming (2015)