Mike Portnoy was in Dream Theater.
Mike Portnoy . From A Change of Seasons onwards , Portnoy had been writing a significant amount of Dream Theater 's lyrics . Besides his work with Dream Theater , Portnoy is known for his many side projects and tribute bands . He is a founding member of Liquid Tension Experiment , an instrumental progressive rock band featuring fellow Dream Theater members John Petrucci and Jordan Rudess along with bassist Tony Levin .