Which groundbreaking approach to music recommendations did Pandora's Music Genome Project pioneer that set it apart from other early music streaming services?

The way we discover music has transformed dramatically in the digital age. From physical record stores where staff made recommendations to today's sophisticated algorithms that seem to know our tastes better than we do ourselves. Music recommendation systems have become essential to streaming platforms, shaping how artists reach audiences and how listeners discover new sounds. Test your knowledge about the technology behind how new music finds its way to your ears!

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Collaborative filtering based on what similar users liked
Manual classification of songs by trained musicologists using hundreds of musical attributes
Social graph analysis of users' friend networks to suggest music
Lyric analysis using natural language processing to match content preferences