Whoever recorded the first rap "song" might have been very proud for creating a new form of music. But I wonder if he/she knew that the concept started much earlier, perhaps in 1954 with this recording of Art Carney performing The Night Before Christmas. What do you think? Is my comparison fair?
https://www.youtube.com/watch?v=uZQoeKc0LL4
Carney played the sewer worker Ed Norton in the Jackie Gleason show "The Honeymooners".