Which music streaming service first implemented 'personalized sound logos' that subtly change based on a user's listening habits as part of their brand identity strategy?

The music industry has pioneered innovative retail experiences that engage customers beyond traditional shopping. One particularly powerful strategy has been the development of sonic branding - distinctive audio elements that create instant brand recognition. Major music retailers and streaming platforms have revolutionized how consumers connect with their brands through carefully crafted sound identities. Test your knowledge about this fascinating intersection of music retail branding and consumer psychology!

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Spotify, with their adaptive sonic signatures launched in 2018 that reflect user genres
Apple Music, with their dynamic tones system developed after acquiring Beats
Tidal, with their high-fidelity audio watermarks that change based on premium tier subscriptions
Amazon Music, with their Alexa-integrated sound branding that adapts to user demographics