Haters gonna hate, but Marco's rendition of Fuwa-fuwa Time hit 500,000 views on Youtube. It's the most professional non-canonical version that I know on the whole Internet[1]. Josh Gerrago managed 240,000 for My Love Is a Stapler. Awesome, guys, congratulations. Love you, love K-ON.

[1] Some amateurs managed to outstrip even Marco, thanks to fluctuations in the ways videos go viral in Japan. Frankly, they cut my ears, but I don't want to put down their enthusiasm.