Which innovative retail analytics approach revolutionized the music industry by first introducing personalized music recommendations based on collaborative filtering algorithms?

The music industry has undergone massive transformation with the rise of streaming services, fundamentally changing how labels and artists understand their audiences. Retail analytics in music has evolved from simple sales figures to complex listener data that shapes everything from artist development to marketing strategies. This poll tests your knowledge about how data analytics has transformed the business side of music consumption and audience engagement.

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Spotify's Discover Weekly (2015)
Pandora's Music Genome Project (2000)
Apple Music's For You feature (2015)
Last.fm's Audioscrobbler system (2002)