Dream Theater Twitter Q&A with Mike Mangini, How do you prepare to write/record his epic drum parts?

Vote for Dream Theater in the 2013 Metal Metal Madness Visit and Dream Theater are in the studio recording the follow up to their Grammy nominated album A Dramatic Turn Of Events. Members John Petrucci, John Myung, Jordan Rudess, Mike Mangini and James LaBrie sat down and answered some questions from their fans on Twitter. This question