What key strategic business move dramatically increased Shazam's user growth and significantly contributed to its success before Apple's acquisition?

Shazam transformed how we identify music with its groundbreaking audio fingerprinting technology. What began as a simple dial-in service has evolved into one of the music industry's most valuable tools for discovery and engagement. This poll tests your knowledge about this retail success story that changed how consumers interact with music they hear in their everyday environments and revolutionized impulse music purchasing.

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Pivoting from a paid service to a free app with advertising revenue model
Implementing a subscription-based premium tier called Shazam Encore
Exclusive partnerships with major record labels for first-listen privileges
Developing proprietary hardware devices for DJs and music professionals