Which AI-driven recommendation technique revolutionized Spotify's music discovery and significantly reduced their customer churn rate between 2015-2018?

The music industry has been transformed by streaming platforms, creating new challenges and opportunities for artists and record labels alike. How well do you understand the data-driven strategies behind modern music retail? This trivia question explores how artificial intelligence is reshaping music discovery and recommendation systems that drive consumer engagement and sales in the digital era.

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Collaborative Filtering via their 'Discover Weekly' algorithm that analyzes listening patterns across user communities
Sentiment analysis of social media posts to predict emerging music trends
Neural network analysis of song lyrics to match with listener mood profiles
Acoustic fingerprinting technology that identifies similar sound patterns between tracks