Simplify the following text for a Grade 10 native English-speaking person.
Original: Charles Hardin Holley ( September 7 , 1936 â `` February 3 , 1959 ) known professionally as Buddy Holly , was an American singer-songwriter and a pioneer of rock and roll .
Simplified: Charles Hardin Holley or Buddy Holly ( September 7,1936 - February 3 , 1959 ) was an American rock and roll singer , songwriter , and musician .