Which AI-powered music recommendation system was the first to implement 'collaborative filtering' technology that revolutionized personalized music retail in the early 2000s?

The music retail landscape has transformed dramatically with technology. Physical record stores have evolved into sophisticated digital platforms with AI-powered recommendation systems that have revolutionized how consumers discover and purchase music. This poll tests your knowledge about a groundbreaking AI innovation in music retail that changed the industry's personalization approach.

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• Pandora's Music Genome Project
• Amazon's Music Recommendation Engine
• Last.fm's Audioscrobbler
• Apple's iTunes Genius

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