Simplify the following text for a Grade 13 native English-speaking person.
Original: Coleridge-Taylor 's work was later championed by Malcolm Sargent , who between 1928 and 1939 conducted ten seasons of a costumed ballet version of The Song of Hiawatha at the Royal Albert Hall with the Royal Choral Society ( 600 to 800 singers ) and 200 dancers .
Simplified: Coleridge-Taylor 's works were often performed by Sir Malcolm Sargent who conducted ten seasons of a costumed ballet version of Hiawatha at the Royal Albert Hall between 1928 and 1939 with the Royal Choral Society ( 600 to 800 singers ) and 200 dancers .