Which innovative data analytics technique revolutionized how Spotify recommends music to listeners, leading to a significant increase in artist discovery?

The music industry has transformed drastically in the digital age, with data analytics playing a crucial role in how artists and labels make strategic decisions. From predicting hit songs to understanding listener behavior, analytics has revolutionized music marketing. This trivia question explores how streaming platforms utilize sophisticated data analysis to create value for artists and listeners alike. Test your knowledge of the intersection between music business and data science!

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Collaborative filtering using the Echo Nest acquisition technology
Simple genre-based categorization using manual tagging
Random forest algorithms based solely on previous listening history
Social media sentiment analysis of listener comments