Which innovative recommendation feature did Spotify introduce in 2015 that dramatically changed how listeners discover new music and became widely copied by competitors?

Music streaming platforms have revolutionized how listeners discover new artists and songs. Behind the scenes, sophisticated recommendation systems analyze listening patterns and preferences to suggest music that keeps users engaged. These systems have transformed the industry by creating new pathways to success for artists outside traditional promotion channels. Test your knowledge about how music recommendation technology has changed the industry landscape!

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Discover Weekly - personalized playlists refreshed every Monday based on individual listening patterns
Song Radio - extended playlists generated from a single track selection
Daily Mix - genre-specific mixes combining familiar tracks with new recommendations
Release Radar - customized playlists featuring new releases from followed artists