Simplify the following text for a Grade 5 native English-speaking person.
Original: Fielding altered and rewrote The Author 's Farce for its second run beginning on 21 April 1730 , when it shared the bill with his earlier play Tom Thumb .
Simplified: Fielding changed The Author 's Farce . The new play was shown on 21 April 1730 with Fielding 's play Tom Thumb .