In the years leading up to 1971, Sun Ra wrote many compositions and poems specifically inspired by the ancient African Kingdoms and many others with associated mythological and heliocentric connotations. As such, a visit to Egypt and the opportunity for the Arkestra to play there was a matter of necessity. Ra's first ever concerts outside of the US had occurred in late summer and autumn of 1970 with performances in France, Germany and the UK and a second European tour was arranged for late 1971. At the end of that second tour, Ra caught wind of cheap flights from Denmark to Cairo. The 4CD set features these albums alongside previously unreleased material from the December 1971 recordings. All tracks are remastered from the original tapes and the CD set also features a 24-page booklet featuring new sleeve notes and rare photos by Hartmut Geerken and background information on the recordings by Paul Griffiths.