As I’m sure you know, I’m very passionate about karaoke (if you don’t know, please familiarize yourself with these videos~). Being as K-On!! was one of the best shows of the year and was a show about music with a number of really good opening and ending themes (even some great B-sides!), it seems like perfect karaoke material.
Or it would, were the songs not insanely difficult to sing. I pride myself on being exceptional at singing fast and complex songs—last Otakon, I did Shounen Heart, a rap song by Home Made Kazoku from Eueka Seven, almost without error (and those errors aren’t made all the time). But K-On’s music is a whole level above that.