Old School Chicago Soul

Someone sent me the links to these "dusty" clips and Lord knows I'm going to be on YouTube all night searching for more. I totally didn't know the Five Stairsteps were this young when they made these songs (granted I was pretty young myself then). They look like babies and sound so good! Where did this kind of music go?

And for what I didn't know ... The chick in the group starts the song "Ooh Child" ...