Simplify the following text for a Grade 10 native English-speaking person.
Original: Ishman Bracey ( January 9 , 1901 â `` February 12 , 1970 ) was an American blues singer and guitarist from Mississippi , considered one of the most important early delta blues performers .
Simplified: Ishman Bracey ( January 9 , 1901 - February 12 , 1970 ) , was a blues singer and guitarist from Mississippi .