Universe in Blue, a collection of undated live club performances by Sun Ra & His Blue Universe Arkestra, was issued in small-run pressings with two different LP covers on Sun Ra’s Saturn label in 1972. Until now it has never been officially reissued on LP or CD.

In the monumental—and ever-evolving—Sun Ra discography, particularly as catalogued in The Earthly Recordings of Sun Ra, by Robert L. Campbell and Christopher Trent (2000 ed.), these tracks were believed to have been recorded “Probably live in California. ca. August 1971.” However, according to Michael D. Anderson of the Sun Ra Music Archive, who researched tapes in his possession, these performances were captured at the rowdy Lower East Side jazz mecca Slugs. Located at 242 East 3rd Street (between Avenues B and C), the venue was formerly a Ukrainian restaurant/bar and later a drug den before it was converted into a music club by Jerry Schultz. He initially dubbed it “Slugs Saloon,” until he was advised that the word “saloon” violated New York City ordinances. Schultz rechristened the venue “Slugs in the Far East,” because it was situated in a somewhat forsaken, and then-disreputable eastern Greenwich Village neighborhood. The club legally maxed out at 75 patrons, but often wedged in twice that number. Despite its legendary status as a New York jazz hotspot, Slugs is more notoriously known for a tragic 1972 incident that contributed to its demise: the fatal shooting (by his common-law wife) of young hard bop trumpet virtuoso Lee Morgan. (This tragedy is chronicled in Kasper Collin’s 2016 documentary film, I Called Him Morgan, which contains dozens of interior photographs of Slugs.)

Starting around 1966, and continuing steadily for several years while they remained residents of New York, Sunny and his band performed two sets at Slugs on Monday nights. These shows continued after the Arkestra decamped for Philadelphia around 1968. (Ra eased himself into the relocation, and did not become a full-time Philly resident until 1971.) By 1970 Ra had begun shepherding the Arkestra to Europe, but while they were in town, Slugs gigs were sporadically booked.

Based on a number of accounts, the Slugs shows typically started around 9:00 pm and could blaze on with or without breaks until 4:00 am. The personnel fluctuated, depending on who showed up, who was hanging around and could handle an instrument, and the bandleader’s divinations. These evenings were raw, unpredictable, and calamitous, and not without artistic controversy. They brought Sun Ra greater attention from the New York press and helped cement his reputation for audacious showmanship.