Complex sentence: He played guitar as an accompanist to Big Maceo Merriweather, Sonny Boy Williamson II and Baby Boy Warren before being recorded in 1938 by the folklorist Alan Lomax for the Library of Congress.
Split into simpler sentences: He played guitar as an accompanist for Big Maceo Merriweather, Sonny Boy Williamson II and Baby Boy Warren. He was recorded in 1938 by the folklorist Alan Lomax for the Library of Congress.