Complex sentence: David Freiberg (born August 24,1938) is an American musician best known for contributing vocals, keyboards, bass guitar, guitar, viola and percussion as a member of Quicksilver Messenger Service, Jefferson Airplane and Jefferson Starship.
Split into simpler sentences: David Freiberg (born August 24,1938) is an American musician. He has contributed vocals, keyboards, bass guitar, guitar, viola and percussion to Quicksilver Messenger Service, Jefferson Airplane and Jefferson Starship.