Which music industry marketing campaign famously gave away an entire album for free to every iTunes user in 2014, automatically downloading it to 500 million devices?

Test your knowledge about one of the most innovative and memorable marketing campaigns in music retail history! The digital music revolution changed how we consume music forever, but certain campaigns stood out for their creativity and impact on both the industry and popular culture. Can you identify which groundbreaking marketing initiative truly revolutionized the music retail landscape?

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U2's 'Songs of Innocence' Apple partnership
Beyoncé's surprise visual album 'Beyoncé' release
Radiohead's 'pay what you want' model for 'In Rainbows'
Jay-Z's 'Magna Carta Holy Grail' Samsung giveaway