Simplify the following text for a Grade 7 native English-speaking person.
Original: Chick Webb died on June 16 , 1939 , and his band was renamed `` Ella Fitzgerald and her Famous Orchestra '' with Ella taking on the role of bandleader .
Simplified: Chick Webb died on June 16 , 1939 , and his band was renamed `` Ella Fitzgerald and her Famous Orchestra '' . Fitzgerald became the bandleader .