I don't know if I'll be able to find it in the GD when it reopens
But do you remember some song titles were written on a board I think in a video... Somebody paused it and screencapted it and we were able to see some titles. "Yeah E Yeah" was one of them from what I remember.
I think "Yeah E Yeah" was the demo title of "Baby Mama". She mentions it many times through the song and uses it to end the song.
Or maybe that's the transition to another song called "Yeah E Yeah"?