Amazing… the girl singing can do a ridiculous Hirano Aya impression. It sounded so much like her in the beginning. Also, its so epic at the Motteke Sailor Fuku part (7:05). She does a decent Konata impression. Kumikyoku (組曲)is such a great song especially because there’s so many versions of it. Someone probably already made a collection, but I must find them all. The greatest 10 minutes of anime music evar.
Here’s another Haruhi version, except with several other people singing… idk I liked the one above better than this one because the guys singing here aren’t that great.
-clazy
“I spend way too much time on youtube.”

Do you happen to have a High Quality mp3 from the 2nd video?
Where’s the first video?
I guess you don’t realize it, but the second video has of the voices of the original voice actors singing it. So the guys sings that “aren’t that great” are Tomokazu Sugita and Daisuke Ono. That video is made by using a voice synthesizing program (probably Vocaloid), taking the voices of the voice actors and editing it to make it sound like they are singing it.