Originally released on Saturn Records in 1979, both Sleeping Beauty and On Jupiter are studio recordings by the large Sun Ra ensemble (including electric guitar and electric bass) and, for the most part, feature the first recordings of the titles included on them (though most were played live a few months earlier). These two releases belong together, since they were recorded and released in close proximity and are both long, groove-based, pieces that range from proto-disco to relaxed groove-driven pieces in which electric piano, guitar and bass function as a ground on which a parade of events drift in and out; Sleeping Beauty is a chaotic, swirling masterpiece with lots of effects added to the instruments and an interesting mix.