The nonsense chorus had its origin in the song "Ching a Ring Chaw," which in print dates from 1833, an anonymous minstrel tune also known as "Sambo's Address to His Bred'ren." See: Ching

Chinger ringer, ring ching, ching
Ho ah, dingah ding kum darkee,
Chinger ringer, ring ching chaw,
Ho ah ding kum darkee.

This song has the verse

No more our sons cry weep, no more he be the back-e
No more our dorters weep, kase dey all call em black-e,
No more dey wan to be, no more wash and cook-e.
But ebry day we see em read de novel book-e.