Simplify the following text for a Grade 8 native English-speaking person.
Original: George Szell ( June 7 , 1897 -- July 30 , 1970 ) , originally GyÃ rgy SzÃ ll or Georg Szell , was a Hungarian-born American conductor and composer .
Simplified: George Szell ( pronounced : â sellâ ) ( born Budapest , 7 June 1897 ; died Cleveland , 30 July 1970 ) was a famous conductor .