I've got it!

It's originally a song written during the American Civil War, 1861 to be precise, by a certain Henry Clay Work, in favor of the abolition of slavery. The title is "Kingdom Coming".

You can also hear it in this other Tex Avery cartoon πŸ˜€

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#TexAvery #KingdomComing #TheYearOfJubilo #HenryClayWork

June 8: The Man Whose Songs the Soldiers Sang Dies in Hartford

  Henry Clay Work, one of the most popular songwriters of the Civil War era, died today in 1884 at age 51, while in Hartford visiting his mother. Work, who composed such still-sung songs as &#…

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