This fifth piece is build out of minor and major sixth intervals, played simultaneously in the right or left hand. On the piano, these notes are 8 and 9 keys apart.
This piece is sort of a stage for a friendly, even somewhat humorous, conversation between major and minor sixths, and between major and minor scales, which have such distinct personalities. Neither the major nor minor has a chance to say more than a few words before the other interrupts it. The most fun happens when they start talking at the same time.