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 is finally getting it's first ever vinyl release. This Record Store Day 2015 exclusive pressing is limited to 2,000 copies worldwide. Colored Vinyl version is no longer available 2016.