"Octavarium" is the eighth studio album by progressive metal band Dream Theater, released on June 7, 2005, under Atlantic Records. This album features a total of eight tracks, showcasing the band's signature blend of rock and metal influences. "Octavarium" is noted for its intricate compositions and thematic depth, which explores the concept of cycles and the interconnectedness of music and life. The album opens with "The Root of All Evil," a powerful track that sets the tone for the journey through the album. The title track, "Octavarium," is a 24-minute epic that encapsulates the band's progressive ethos, combining various musical styles and time signatures. With a runtime of over 70 minutes, "Octavarium" is a testament to Dream Theater's ambitious approach to songwriting and their technical proficiency as musicians. This release reflects the band's evolution and commitment to pushing the boundaries of the rock and metal genres, making it a significant entry in their discography. The album's production quality is high, with the band collaborating with renowned producer Mike Portnoy, ensuring a polished sound that complements the complexity of the music.