Simplify the following text for a Grade 11 native English-speaking person.
Original: Death Angel was formed in the San Francisco Bay Area , California , in 1982 by cousins Rob Cavestany ( lead guitar ) , Dennis Pepa ( vocals , bass ) , Gus Pepa ( rhythm guitar ) , and Andy Galeon ( drums ) .
Simplified: The members are : Mark Osegueda ( vocals ) Rob Cavestany ( guitar , vocals ) , Ted Aguilar ( guitar ) , Andy Galeon ( drums ) , Dennis Pepa ( bass , vocals )