Simplify the following text for a Grade 8 native English-speaking person.
Original: On November 29 , 2009 , during an encore at a Dokken show at The House Of Blues in Anaheim , George Lynch and Jeff Pilson joined Mick Brown and Don Dokken for two songs , the first time they were on stage together in 12 years .
Simplified: Dokken was composed of founder Don Dokken on vocals , George Lynch on lead guitars , Juan Croucier on bass , and `` Wild '' Mick Brown on drums . In 1983 Croucier left Dokken in order to join Ratt and was replaced by Jeff Pilson .