Conversation so far:
What is a marching band
A marching band is a group in which instrumental musicians perform while marching.
What are marching bands for?
Marching bands perform for entertainment or competition.
What do marching bands try?
Marching band members also try to keep a constant pace or step size while marching in parade

Question: What did this cause
Self-contained rewrite: What did staying in constant pace or step with other members in the marching band cause