Simplify the following text for a Grade 10 native English-speaking person.
Original: The band comprises lead vocalist and guitarist Brian Aubert , vocalist and bassist Nikki Monninger , drummer Christopher Guanlao and keyboardist Joe Lester .
Simplified: Silversun Pickups has four members in the band ; the current band members are Brian Aubert , Nikki Monninger , Joe Lester , Christopher Guanlao .