^Aw I thought it was the full SCANDAL version. It is the original version, dunno the name of the artist. 
The song is originally the anime "K-On!"'s ending theme song, an anime which the girls apparently like - dunno if they covered this song for that reason, but meh. Apparently, the artists are Toyasaki Aki, Hisaka Youko, Satou Satomi and Kotobuki Minako. O_o Kind of a disorganized list...
Here's the ending theme, if it's any consolation~ The K-On! band girls are pretty cute~ =3 Might check out the anime.... (my friend says it's pretty good, actually =O)
Don't say "lazy" (widescreen)
Uhmm, yeah, most of us know that anime, thank you very much. T-T
Well jeez, sorry.... I wasn't trying to be a smartass or anything.

That was really harsh...
Next time I'll just shut my mouth and not try to help out...
I was simply answering his question a little too elaborately I guess. He didn't know the name of the artist, so I was like.... well, I don't think there's anyone particular artist. It came from that anime k-ON, and was sung by the character's voice artists.... So that's why I went on like that.
I didn't want to make anyone feel stupid, but apparently I did... I know you guys know what K-ON! is, of course, because they covered that.