Which groundbreaking sonic branding technique did Spotify introduce in 2019 that personalized advertising for its Premium subscription service?

Sound is one of the most powerful tools in advertising, especially in the music industry. Sonic branding creates instant recognition and emotional connections with consumers. From streaming platforms to instrument manufacturers, music industry companies have pioneered innovative audio marketing techniques that have revolutionized how products are advertised. Test your knowledge about this fascinating intersection of music and marketing!

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Wrapped Personalization: Ads featuring snippets of users' most-played songs to demonstrate the value of their listening history
Mood Matching: Advertisements that changed their background music based on a user's recently played genres
Artist Endorsement Algorithm: Ads featuring recommendations from a user's top artists encouraging Premium subscriptions
Sonic Interrupt Strategy: Brief interruptions in free accounts that played the exact opposite of a user's preferred music style