Mike Portnoy is a legendary modern drummer and, as of 8th September 2010, the former drummer of Dream Theater. He has used quite a variety of drum kits throughout his musical career, some of which he has incorporated electronic drum sets. He was also the back vocalist of the band, and for a long time has been known as a very technical drummer. He wrote many of the lyrics for Dream Theater, particularly after Kevin Moore departed from the band. In the Modern Drummer’s Hall of Fame, Portnoy is second to Neil Peart in terms of age, making him the 2nd youngest person ever to be inducted. During 2010, Portnoy filled in as Avenged Sevenfold’s drummer temporarily for the recording of the album Nightmare. This was in place of Jimmy “The Rev” Sullivan.
There is speculation that Portnoy’s departure from Dream Theater could mean that he is going to become the new permanent drummer for Avenged Sevenfold. His leave was surprising, as earlier in the year he had stated that his commitment to Dream Theater was his main priority and that he was going to go on to work on their next album for 2011.