Which retail technology innovation first allowed consumers to purchase and download individual songs directly rather than buying complete albums?

The music industry has undergone dramatic transformations in how products are sold and consumed over the decades. From vinyl records in specialty shops to digital streaming services, retail technology has revolutionized how we discover, purchase, and listen to music. This poll tests your knowledge about a pivotal technology that changed music retail forever.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Apple's iTunes Store (2003)
Napster's P2P service (1999)
Amazon MP3 Store (2007)
Microsoft's Zune Marketplace (2006)