This is positively the finest exhibition ever to be shown... be that as it may.

9 seconds sound clip from the The Wizard of Oz (1939) movie soundboard.

You can hear this line at 01:34:01 in the Blu-ray version of the movie.

Quote context

[...]

- And suddenly the wind changed and the balloon floated down into the heart of this noble city where I was instantly acclaimed Oz, the first wizard deluxe!

- Times being what they were, I accepted the job retaining my balloon against the advent of a quick getaway. Ha, ha.

- And in that balloon, my dear Dorothy, you and I will return to the land of E Pluribus Unum.

- My friends. I mean, my friends!

(CROWD CHEERING)

- This is positively the finest exhibition ever to be shown... be that as it may.

- I, your Wizard per ardua ad Alta, am about to embark upon a hazardous and technically unexplainable journey into the outer stratosphere!

- To confer, converse and otherwise hobnob with my brother wizards.

- And I hereby decree that until what time if any, that I return...

- The Scarecrow, by virtue of his highly superior brains shall rule in my stead...

[...]