Simplify the following text for a Grade 10 native English-speaking person.
Original: In 1939 the orchestra 's sponsors withdrew their financial support and the orchestra became self-governing , with members of the orchestra themselves taking decisions on the organization 's affairs .
Simplified: In 1939 the orchestra 's sponsors stopped giving money to the orchestra . The orchestra became a self-governing body , which meant that , like the London Symphony Orchestra , the players organized the orchestra themselves , deciding on their pay , their members , what music they should play etc.