Simplify the following text for a Grade 7 native English-speaking person.
Original: James Douglas `` Jim '' Morrison ( December 8 , 1943 -- July 3 , 1971 ) was the lead singer and lyricist of American band The Doors .
Simplified: James Douglas ( Jim ) Morrison ( December 8 1943 - July 3 1971 ) was the lead singer of the rock band The Doors .