maneo wrote:That should be the "Camptown Races" song.

Not being familiar with that song title I YouTube'd it... and was like

THAT song!
https://www.youtube.com/watch?v=_tuu5YtkPIo" onclick="window.open(this.href);return false;
"Camptown Races" sung by Al Jolson
This reminds me of something similar that was popular in the UK 1960-late70s or so, called 'The black and white minstrel show'.
https://www.youtube.com/watch?v=KoYOraDt1_k" onclick="window.open(this.href);return false;
'The Black & White Minstrel Show 1978 - Part 1'
The 'blacks' were all whites in make-up, of course. And the linked was Pt1 of their last ever show.
Truly bizarre now looking back at such things!