夢中夢 (romanized in Mutyumu, to be read Muchūmu, meaning "a dream within a dream") was a band from Japan, formed in 2002. They describe their own music as a mixture of post-rock, minimalism, classical, alternative, and heavy metal. They split up in 2010, stating on their official website "Someday, we'll be back". In 2011, only two remixes were released of tracks from their self-titled album as a tribute to the Tokyo March 11, 2011 earthquake and tsunami.