Simplify the following text for a Grade 6 native English-speaking person.
Original: It was not until the previous lead singer had failed to write any lyrics that Iero became a member . As a member of Leathermouth , this is the first project where he contributes lyrics and lead vocals since Pency Prep broke up before My Chemical Romance was formed .
Simplified: As a member of Leathermouth , this is the first band where he writes the lyrics and does lead vocals .