Which music streaming platform first introduced collaborative filtering for recommendations, analyzing user listening patterns to suggest similar artists and songs?

Music streaming has revolutionized how we discover new artists and songs. Behind the scenes, sophisticated recommendation algorithms analyze our listening habits to suggest content we might enjoy. This poll explores the history and technology behind these music recommendation systems that have transformed the industry and how we experience music. Test your knowledge about the innovation that has changed how millions discover new tunes!

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Pandora (with its Music Genome Project)
Last.fm (originally as Audioscrobbler)
Spotify (with its Discover Weekly feature)
Apple Music (with its Genius playlist technology)