This Is It Theme from the Bugs Bunny Show Words and music by Mack David & Jerry Livingstone (1961) Overture, curtain, lights! This is it, the night of nights! No more rehearsing and nursing a part; we know ev'ry part by heart. Overture, curtain, lights! This is it, you'll hit the heights! An oh what heights we'll hit. One with the show, this is it!