Simplify the following text for a Grade 10 native English-speaking person.
Original: The band currently consists of Tim McIlrath ( lead vocals , rhythm guitar ) , Zach Blair ( lead guitar , backing vocals ) , Joe Principe ( bass guitar , backing vocals ) and Brandon Barnes ( drums , percussion ) .
Simplified: Their current members are Tim McIlrath ( vocals , guitar ) , Joe Principe ( bass guitar ) , Brandon Barnes ( drums ) , and Zach Blair ( guitar ) .