Simplify the following text for a Grade 4 native English-speaking person.
Original: Later that year Harvey Fuqua , founder and co-lead singer of the landmark doo-wop group The Moonglows , recruited them , after the break up of the original members , to be `` The New Moonglows '' which moved the formerly-named Marquees from Okeh to Chess Records .
Simplified: They then met Harvey Fuqua and joined with his group The Moonglows .