Which music streaming service first implemented a distinctive 'sound logo' (audio signature) that plays when users open their app, creating a powerful form of sonic brand identity?

Test your knowledge of unique brand identity elements in the music industry! Major music companies and streaming services have developed distinctive brand identities beyond just their logos. One fascinating aspect is how some have created audio signatures that subliminally reinforce brand recognition. This poll challenges you to identify which music platform pioneered a specific type of sonic branding that has since influenced the entire industry.

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Spotify, with its three-note ascending melody introduced in 2013
Apple Music, with its pulsing beat sound introduced at launch in 2015
Tidal, with its water-inspired ripple sound implemented in 2014
Amazon Music, with its whispered 'prime' vocal tag introduced in 2016