Willy Wonka's delicious musical imagination

Few musical hooks suck me in as much as the opening of "Pure Imagination" from the old "Willy Wonka and the Chocolate Factory" film; the one with Gene Wilder (1971). That strange downward leap of a minor 9th (an octave plus a half-step) and back up to the lower octave. It immediately creates a sense of wonder and curiosity. Plus, there's a perfect amount of repetition in the tune... not too much... just enough. And it's rare that the contrasting section of the melody, the B section, is as...