Which music streaming service first introduced the 'freemium' business model that combined ad-supported free listening with a premium subscription option, revolutionizing music retail?

The music industry has undergone massive transformation in how products are delivered to consumers. From physical media to digital downloads to streaming services, retail innovations have completely reshaped how we discover, purchase, and consume music. This trivia question focuses on a pivotal moment in music retail that changed the industry forever.

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Spotify
Apple Music
Pandora
Amazon Music