Which groundbreaking music retail innovation did Apple introduce in 2003 that fundamentally changed how people purchased and consumed music?

The music industry has seen dramatic shifts in how consumers purchase and access their favorite tunes over the decades. From vinyl to streaming, music retail strategies have evolved significantly. This poll tests your knowledge of a pivotal moment in music retail history that changed how millions of people purchase and listen to music. Do you know which revolutionary retail strategy transformed the industry forever?

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iTunes Store, allowing individual song purchases for $0.99 each
Apple Music Subscription, the first streaming service with major label partnerships
iPod+iTunes Bundle, the first hardware/software ecosystem for digital music
iTunes Match, the first cloud-based music storage solution