Sound in a Square: How QR Code Generators for Songs Are Changing the Way We Share Music

Imagine walking down the street and seeing a sleek sticker on a lamppost, or unwrapping a custom birthday card from a friend. Instead of a block of text, you see a neat black-and-white pixelated square. You pull out your smartphone, point the camera for a second, and suddenly, a song begins to play—a melancholic indie track, a nostalgic 90s anthem, or a deeply personal voice memo recorded just for you.