3min chapter

Twenty Thousand Hertz cover image

From Cylinders to Streaming

Twenty Thousand Hertz

CHAPTER

The History of Portable Music Players

The first portable music player that really took off was the 8-track. If you know where those sounds come from, submit your guess at mystery.20k.org. Anyone who guesses it right will be entered to win a super soft 20,000 Hertz T-shirt. And here's a chance for you to win $1000 with this second challenge. Can you guess which company developed the 8-tracks? I'm going to go with Sony.

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