Which music streaming service first pioneered the use of 'personalized audio logos' that adapt to each user's listening habits?

In the music industry, retail branding has evolved beyond visual elements to incorporate distinctive audio signatures. Major music retailers and streaming platforms now invest heavily in sonic branding to create memorable customer experiences. This unique form of branding helps establish emotional connections with customers and reinforces brand recognition even when visual elements aren't present. Test your knowledge of this fascinating intersection between music retail and audio branding strategies!

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Spotify, with their 2018 'Sound Identity' program that generates unique welcome tones based on user genres
Apple Music, through their 2019 'Signature Sound' feature that changes based on most-played artists
Tidal, via their 2017 'Sonic Fingerprint' technology that creates user-specific intro melodies
Amazon Music, using their 2020 'Echo Tune' system that customizes startup sounds based on listening history