Complex sentence: He worked extensively in Mexico with the Trío Calaveras, becoming known there as "El Charro Guero" (the blond cowboy); and, working with song collector Percy Jones, began performing and popularising many previously forgotten Australian folk songs.
Split into simpler sentences: He worked extensively in Mexico with the Trío Calaveras, becoming known there as "El Charro Guero" (the blond cowboy). Working with song collector Percy Jones, he also began performing and popularising many previously forgotten Australian folk songs.