Jazz Song Famous for Mumble?

I don't remember, but my Jazz teacher at school let us hear this song with a singer that mumbled a lot. You couldn't make out any words. He said the song was called "Mumbles" but I couldn't find the song anywhere. So I was wondering if you guys knew the song. All I know is that the singer sung... show more I don't remember, but my Jazz teacher at school let us hear this song with a singer that mumbled a lot. You couldn't make out any words. He said the song was called "Mumbles" but I couldn't find the song anywhere. So I was wondering if you guys knew the song. All I know is that the singer sung that way to make fun of the other jazz singers that people couldn't understand because it sounded like mumbling. Thanks!
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