Which famous historical figure was the first celebrity endorser of Thomas Edison's phonograph, recording their voice in 1878 to demonstrate the device's capabilities?

Beyond their scientific genius, some of history's greatest inventors formed surprising partnerships with celebrities to promote their groundbreaking discoveries. These collaborations helped transform innovative ideas into household names, sometimes altering public perception of the technology itself. Test your knowledge of these fascinating historical marketing alliances that helped shape the commercial success of now-iconic inventions.

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