Which groundbreaking advertising campaign was the first to use QR codes that unlocked exclusive music content, launching a trend that revolutionized how artists release music?

The music industry has seen numerous innovative advertising campaigns that changed how artists promote their work. Some campaigns have become as iconic as the music itself, reshaping marketing strategies across the industry. Test your knowledge about a groundbreaking advertising approach that transformed music promotion and influenced how artists connect with fans.

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Jay-Z's partnership with Samsung for 'Magna Carta Holy Grail' (2013)
Radiohead's 'In Rainbows' pay-what-you-want digital release (2007)
Beyoncé's surprise visual album drop on iTunes (2013)
Gorillaz's interactive website for 'Plastic Beach' (2010)