Official expanded 2xLP / 2xCD edition with fourteen tracks of alternate versions and studio takes, and the CD version contains an additional four CD only tracks. Liner notes by avid fan Ira Kaplan from Yo La Tengo, and additional essay from longtime Ra blogger Rodger Coleman (NUVOID Sun Ra Sundays). Vinyl gatefold jacket includes a 12x12 insert reproduction of the original LP jacket art.When Sun Ra released his debut Saturn release in 1957, it signaled the Arkestra's mission for the future. The cover declared the album a "21st Century Limited Edition." The compositions on Supersonic Jazz conveyed optimism and hope, bringing a message auguring the World of Tomorrow. Ra declared this the first dimension of a fresh art form, as he set about evolving a new American music - a composite of the past and future, the known coalescing with the unknown. The album, not very well received upon release, reveals a vibrant universe of sound, with highly developed arrangements and sophisticated musicianship, especially Ra's innovative keyboard work and John Gilmore's astonishing soloing.