Which music streaming service was the first to introduce a major product innovation that allowed users to create and share collaborative playlists in real-time with friends?

Streaming services revolutionized how we consume music, but their product development journeys weren't always smooth. This trivia tests your knowledge about key product design decisions that transformed these platforms from simple music players to sophisticated recommendation engines and cultural forces. How well do you know the behind-the-scenes product evolution of the streaming services you use daily?

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Spotify (2008)
Apple Music (2011)
Pandora (2006)
YouTube Music (2010)