Which innovative market research technique did Spotify introduce in 2015 that revolutionized how music labels identify emerging artists and trends?

The music industry has undergone massive transformation with digital streaming platforms collecting unprecedented amounts of consumer data. This has revolutionized how artists and labels make decisions about releases, tours, and marketing. Test your knowledge about how streaming platforms have changed the market research landscape in music and influenced product development in this multi-billion dollar industry.

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Spotify for Artists dashboard with real-time geographic and demographic listener data
Neural network algorithm that predicts Billboard chart positions with 85% accuracy
Collaborative filtering system that matches users with undiscovered independent artists
Blockchain-based royalty tracking that provides artists with listener behavior patterns