This Is It (Bugs Bunny, Overture) Theme Song Lyrics

Overture, curtain, lights
This is it, the night of nights
No more rehearsing and nursing a part
We know every part by heart
Overture, curtain, lights
This is it, we'll hit the heights
And oh what heights we'll hit
On with the show this is it.

Tonight what heights we'll hit.
On with the show, this is it.

[Thanks to Mavery1763, fergua3, dancing_camel rwthomas2001 for correcting these lyrics]