What's the BGM in K-ON? In the anime series K-ON! there is a BGM used quite frequently but I can't find it anywhere. It appears a lot throughout the anime but not in the movie. Here are some examples:

Season 1


episode 8: 8:17 ~ 8:48
episode 9: 10:47 ~ 11:16


Season 2


episode 1: 14:20 ~ 15:55
episode 2: 13:55 ~ 14:57


These are selected at random and the time might vary a bit depending where you watch it. The hyperlink: https://drive.google.com/file/d/0B1ew48VGOQPZRzN4Zl8zUmVjYWs/view leads to google drive which has the BGM. The file is an abstract from season 2, episode 1. Please help me find this song.
I think the BGM you're looking for is titled Pinch Daisuki, it's on album 
K-ON! Original Soundtrack, track #33

youtube link K-ON! - Pinch Daisuki [EXTENDED]