Which music streaming service was the first to successfully implement a 'freemium' business model, offering both free ad-supported and premium subscription tiers?

The music industry has undergone massive transformation in how consumers access and purchase music. One retail innovation in particular revolutionized how we consume music, creating a sustainable model after years of declining physical sales and rampant piracy. Test your knowledge about this pivotal shift in music retail strategy that changed the industry forever.

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Spotify
Apple Music
Pandora
Amazon Music