Simplify the following text for a Grade 7 native English-speaking person.
Original: At that time , the line-up consisted of vocalist Adam Gontier , drummer Neil Sanderson , bassist Brad Walst , lead guitarist Phil Crowe , and secondary guitarist Joe Grant . Most of the members were attending high school when the band initially formed .
Simplified: There are four members in the band : Adam Gontier , Barry Stock , Neil Sanderson and Brad Walst .