Which famous musical note sequence was legally trademarked as a sonic logo by a major music retailer in 2008, becoming the first sound mark to be protected in multiple countries?

Behind every great music retail experience is thoughtful customer engagement. One powerful tool in the music industry's arsenal is sonic branding - distinctive sounds and jingles that immediately evoke a brand. These audio signatures can be as recognizable as visual logos, creating powerful connections with customers. Test your knowledge of these famous musical marketing moments that have shaped the industry's customer experience landscape!

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Guitar Center's five-note guitar strum
The four-note sequence used by Spotify in their early marketing
The distinctive three-note chime of the music retailer HMV
Apple iTunes' eight-note startup sound