Okay, this is half-remembered, but does anyone else remember fully the original "Meow Mix" lyrics?

Something along the lines of (sung melodiously by a live action cat):

"I love chicken, I love tuna! I love liver,
Please deliver Meow mix to (something, something)..."
Into a fast patter song.

And it ends on an enunciated "me-ow!"

Then, the announcer: "Meow Mix. So good, cats ask for it by name."

Later, it was discovered that too much tuna is bad for cats, and they changed the recipe, so they did away with the lyrics, and now, it's a can just singing "m'yow, m'yow, m'yow, m'yow!" to the same tune.