Simplify the following text for a Grade 9 native English-speaking person.
Original: Weelkes ' fourth and final volume of madrigals , published in 1608 , carries a title page where he refers to himself as a Gentleman of the Chapel Royal ; however , records at the Chapel Royal itself do not mention him , so at most he could only have been a Gentleman Extraordinary - one of those who were asked to stand in until a permanent replacement was found .
Simplified: Weelkes ' fourth and final volume of madrigals , published in 1608 , has a title page where he says that he was a Gentleman of the Chapel Royal .