Which music retail strategy first introduced the 'all-you-can-listen' subscription model that fundamentally changed how consumers access music?

The music retail landscape has undergone dramatic transformation over the past two decades. From physical record stores to digital downloads to streaming services, consumer behavior and retail strategies have shifted dramatically. This poll tests your knowledge about a pivotal music retail strategy that changed the entire industry's trajectory. Can you identify the groundbreaking approach that revolutionized music consumption?

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Spotify's Premium tier launch in 2008, which established the first viable subscription streaming model for mainstream consumers
Apple's iTunes Store introduction in 2003, which pioneered the digital download purchase model at $0.99 per song
Amazon's Prime Music launch in 2014, which bundled unlimited music access with its existing Prime membership
Pandora's introduction of Pandora One in 2009, which focused on ad-free personalized radio rather than on-demand listening