Which music streaming platform partnered with Spotify in 2016 to create 'Release Radar', revolutionizing personalized music discovery with AI-powered weekly playlists?

In recent years, the music industry has seen a surge in strategic brand collaborations that extend beyond traditional sponsorships. These partnerships have created innovative product lines, exclusive merchandise, and unique consumer experiences that benefit both the artists and brands involved. Test your knowledge about one of the most successful and transformative brand collaborations in modern music history!

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Microsoft - providing AI technology through their Azure platform to power the personalized recommendation algorithm
None - Release Radar was developed entirely in-house by Spotify's own engineering team without external brand collaboration
Echo Nest - a music intelligence company that collaborated with Spotify after being acquired by them
Google - providing machine learning technology through a strategic partnership announced at Google I/O 2016