Six Degrees of Inner Turbulence

Six Degrees of Inner Turbulence is the sixth studio album by American progressive metal band Dream Theater, released as a double-disc album on January 29, 2002, through Elektra Records. It is the first full-length Dream Theater album to feature a title track. It is also their second longest studio album to date, after The Astonishing (2016). "Six Degrees of Inner Turbulence" is the sixth song and title track on the album of the same name, written and performed by American progressive metal band Dream Theater. Though the song is essentially broken up into eight movements on separate tracks, it lasts 42 minutes in full and takes up the entire second CD of the album. The song was conceived when keyboardist Jordan Rudess wrote what would become the "Overture" section, and the band took various melodies and ideas contained within it and expanded them into segments of the complete piece. The song explores the stories of six individuals suffering from various mental conditions. Particularly represented are bipolar disorder, post-traumatic stress disorder, schizophrenia, post-partum depression, autism, and dissociative identity disorder.