Simplify the following text for a Grade 9 native English-speaking person.
Original: After spending a considerable time searching for Wakefield 's replacement , Xero recruited Arizona vocalist Chester Bennington . Jeff Blue , the vice president of Zomba Music , had referred him to the band in March 1999 .
Simplified: After a bit of time , Xero added Chester Bennington , who was referred by Jeff Blue , the vice-president of Zomba Music .