"Holst's planets were finished in 1916 and first performed in their entirety in 1920 (making the composition public domain). Performance by US Air Force band. Source: Performance by U.S. Air Force Bands Program [1]. This image or file is a work of a U.S. Air Force Airman or employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, the image or file is in the public domain [1] ."