I've heard some corny birds who tried to sing, but stilll, a cat's the only cat who knows how to swing.
10 seconds sound clip from the The Aristocats (1970) movie soundboard.
You can hear this line at 00:58:39 in the Blu-ray version of the movie.
Quote context
[...]
- Everybody wants to be a cat because a cat's the only cat who knows where it's at.
- Tell me, everybody's pickin' up on that feline beat 'cause everything else is obsolete.
- A square with a horn makes you wish you weren't born every time he plays.
- But with a square in the act you can set music back to the caveman days ch-ch-ch-chum.
- Who wants to dig a long-haired gig or stuff like that when everybody wants to be a cat?
- A square with a horn makes you wish you weren't born every time he plays. (2)
- With a square in the act you can set music back to the caveman days.
- Oh, a rinky tinky tinky. (2)
[...]