Simplify the following text for a Grade 6 native English-speaking person.
Original: Gary Shearston ( born Gary Reht Shearston , 9 January 1939 , Inverell , New South Wales ) is an Australian singer and songwriter who was a leading figure of the folk music revival of the 1960s .
Simplified: Gary Reht Shearston ( born January 9 1939 ) is an Australian singer and songwriter . He was a leading figure of the folk music scene of the 1960s .