Which innovative product marketing technique did Taylor Swift pioneer in 2019 that dramatically increased physical album sales by creating collectible variations?

Test your knowledge about innovative product marketing strategies in the music industry! The digital revolution has transformed how artists and labels promote their music. From vinyl comebacks to digital streaming bundles, marketing in the music world has evolved dramatically. This question explores a groundbreaking marketing technique that changed how fans engage with new music releases. Think you know your music industry marketing? Let's find out!

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Multiple album versions with different content, artwork, and collectibles creating a 'complete set' for fans to purchase
Including cryptocurrency tokens with album purchases that could be traded for exclusive concert tickets
Releasing music exclusively on custom-designed USB drives shaped like microphones
Packaging albums with AR technology that unlocked holographic performances when scanned