Schoolhouse Rock

Has anyone ever heard of Schoolhouse Rock? I used to listen to it in 5th grade, then I started listening to them again. If you don't know, it's just a group that sings songs about stuff like conjunctions, American history, and how the government is set up. I started a playlist of Schoolhouse Rock songs, so if you know what I'm talking about, make suggestions! I'm always adding to it, since there are a lot of them.