I don't remember ever seeing that one, but I always LOVED the really dated Warner Bros. cartoons when I was a kid. I just found one of my favorites on youtube, I Like to Singa. For some reason I can't post it here, but you should be able to find it. It was an animal version of the Jazz Singer, starring Owl Jolson. Coincidentally, there's a cameo by Jack Bunny!
Oops, it's I Love To Singa (not like)
I just watched "The Mouse That Jack Built." That was SO CUTE! I love the way the Jack Benny mouse kept giving the audience sardonic looks. :D :D"I Love To Singa" sounds good. I really like Jack Benny! He's so funny. I like his voice too.