How did the Four Step Brothers use challenges in their performances?

The Four Step Brothers were considered among the finest exponents of the "challenge," a tradition in tap dance where performers engaged in a dancing "duel" to demonstrate their skills.1

In their performances, the group utilized the challenge by alternating between sequences of furious, flying steps and moments where each individual dancer attempted to top the others with their own unique footwork. This competitive dynamic served as a centerpiece of their act, allowing them to showcase both their collective technical ability and their individual virtuosity.1