Okay, I had to google!
According to the world wide web, Coke La Rock was the first rapper. He paired up with DJ Kool Herc way back in 1973 to perform the song "King Tim III."
Another "first rap" was by the rock band "Blonde," publishing the song "Rapture." I think this was also made in 1973.
I did this in about five minutes, but I hope this helps!
