Who started “Keyboard Cat”?

Charlie Schmidt, on YouTube, Jun 7, 2007. It reached 5 platforms in 10.8 years.

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Keyboard Cat! - THE ORIGINAL!Charlie SchmidtFirst postKeyboard Cat | Know Your MemeBrad O'FarrellYouTubeBrad O'Farrell / Charlie SchmidtOpen webPressMilestonePlatform jumpPlatform jumpPlatform jumpCommercialPressOwner responseAfterlifePatient zero