Complex sentence: Very little is known for certain about his life, other than he tutored Charlie Patton in the ways of the blues, and moved to Chicago shortly after World War I. There are no recordings of him.
Split into simpler sentences: Very little is known for certain about his life, other than he tutored Charlie Patton in the ways of the blues. There have been suggestions that he moved to Chicago shortly after World War I. There are no recordings of him.