Which retail technology innovation first allowed consumers to legally purchase and download individual songs rather than entire albums, fundamentally changing music industry sales models?

The music retail landscape has transformed dramatically over the decades. From vinyl shops to digital streaming, how music is sold and consumed continues to evolve with technology. This poll tests your knowledge about a significant retail technology advancement that changed how consumers access and purchase music in the digital age.

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

Apple's iTunes Store (2003)
Amazon MP3 Store (2007)
Napster 2.0 subscription service (2003)
Microsoft's Zune Marketplace (2006)