Which music product launch included a live event where every attendee received the product for free, a strategy that was later called one of the most expensive album promotions ever?

The music industry has seen some of the most innovative and headline-grabbing product launches in consumer history. From surprise album drops to revolutionary hardware releases, how artists and companies introduce their products can define their success. This trivia question tests your knowledge of a groundbreaking music product launch that changed how consumers interact with music and set new standards for the industry.

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U2's 'Songs of Innocence' automatic download to all iTunes accounts in 2014
Jay-Z's 'Magna Carta Holy Grail' pre-installation on Samsung Galaxy phones in 2013
Beyoncé's surprise visual album release on iTunes with no prior promotion in 2013
Radiohead's 'pay what you want' digital release of 'In Rainbows' in 2007