What is the name of the song in episode 19 at roughly 12 minutes? In episode 19, at roughly 12 minutes, there's a song playing. I looked through the OST album and couldn't find it.

What is the name of the song, and where could I possibly find it?
If you're referring to the OST that starts playing while we see a shot of schoolchildren at the swimming pool, it's まったりとした日常 (Mattari to Shita Nichijou), which you can listen to a preview of on iTunes.