It'll do magic, believe it or not.
4 seconds sound clip from the Cinderella (1950) movie soundboard.
You can hear this line at 00:44:27 in the Blu-ray version of the movie.
Quote context
[...]
- Mmm-hmm. Now, uh, the magic words. Uh... Oh!
- Sala-gadoola-menchika-boo-la, bibbidi-bobbidi-boo.
- Put 'em together and what have you got?
- Sala-gadoola-menchika-boo-la, bibbidi-bobbidi-boo. (2)
- It'll do magic, believe it or not.
- Now sala-gadoola means menchika-boolaroo.
- But the thing-a-ma-bob that does the job is bibbidi-bobbidi-boo.
- Sala-gadoola-menchika-boo-la, bibbidi-bobbidi-boo. (3)
- Put 'em together and what have you got? (2)
[...]