K-ON on PSP

I have about 5 days off from school, since i have nothing to do i start to play games on my brother's PSP.
its K-ON desuuuu~~~

This game just like guitar hero/have u played this?/, well this games just about pressing the right button on the right time so the melody can flow nicely. Maybe as a person who has a low concentration its kinda hard for me at first, but as it flows, im being used of that.

The songs are nice, and we can choose the character as we choose the instrument, i cant remember the character names/my bad/ and my favorite is the drum! its the coolest instrument X)
(there are lead guitar, rhythim, keyboard, bass, and drum)

I like this kind of game /idk what is the genre's name/ the another example is like dance revolution? ummm..yeah kind of
It has a nice graphic and music, so its worth :)