Complex sentence: The first Rally on the Square featured a brass band from nearby Centre College, which inspired the city to hold the first Great American Brass Band Festival in 1990.
Split into simpler sentences: The first Rally on the Square featured a brass band from nearby Centre College. Carter, "Danville Seeks to Recapture Past With First Festival of Brass Bands" This inspired the city to hold the first Great American Brass Band Festival in 1990.