Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Dream Theater wani rukunin mawaƙa ne na Amurka wanda aka kafa a 1985 a ƙarƙashin sunan Maɗaukaki ta John Petrucci, John Myung da Mike Portnoy yayin da suka halarci Kwalejin Kiɗa ta Berklee a Boston, Massachusetts. Daga baya suka daina karatunsu don kara mai da hankali kan kungiyar da a karshe za ta zama Dream Theater. Ko da yake da dama lineup canje-canje bi, uku asali mambobi zauna tare har Satumba 8, 2010, a lokacin da Portnoy bar band. An sanar da Mike Mangini a matsayin sabon dan wasa na dindindin a ranar 29 ga Afrilu, 2011.  Tambaya: Wane irin 'yan kungiyar ne kungiyar ta kunshi kafin Satumba na 2010?
mambobin asali