Calling Planet Earth comes from a concert recorded at Tivoli Hall in Copenhagen, Denmark on December 5, 1971. Sun Ra and his Arkestra are captured in their prime, while exploring some of their most far out material to date. The recording received its first ever vinyl release with for Record Store Day 2015 as an exclusive color vinyl pressing. Now it will receive a wide release on black vinyl. The recording was remastered and pressed on audiophile-grade vinyl at Pallas Group in Germany.