Which streaming platform first introduced the 'pay-per-stream' revenue model that fundamentally changed how artists earn money from their music?

The music industry has undergone dramatic transformations in how artists and labels generate revenue. Subscription-based streaming services have revolutionized music consumption, creating new metrics for success and challenging traditional sales models. This poll tests your knowledge of how subscription models have reshaped the economics of the music industry and created new paradigms for measuring an artist's commercial impact.

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Spotify (2008)
Pandora (2005)
Last.fm (2002)
Apple Music (2015)