um, guyz - was Q pointing at this 66 min documentary distributed by Astor (or perhaps the 1950 Jubilee)?
https://www.imdb.com/title/tt0218339/
http://www.tcm.com/tcmdb/title/564021/The-Holy-Year-at-the-Vatican/
"Pope Pius XII used the occasion of the 1950 Jubilee to declare a new pontifical anthem for the Vatican City." (https://en.wikipedia.org/wiki/Jubilee_in_the_Catholic_Church)
(https://en.wikipedia.org/wiki/Pontifical_Anthem)
the documentary director:
Richard de Rochemont (December 13, 1903 – August 2, 1982) was an American documentary filmmaker in the late 1940s, who worked on the March of Time newsreel series.
Stationed in France until 1941,[1] he produced a series of shorts which covered such subjects as World War II, the 1920s, and the Vatican. He produced Crusade in Europe (1949), the very first documentary series produced for television, based on the book by Dwight D. Eisenhower, and produced by Time Inc. and distributed by Twentieth Century-Fox Television. He also won a Best Documentary Short Academy Award for A Chance to Live (1949).
He was the brother of documentary filmmaker and feature film producer Louis de Rochemont.
https://en.wikipedia.org/wiki/Richard_de_Rochemont
Note that the 1950 Jubliee Pope Pius XII is same Pope of WWII/Holocaust/Nazi Rat Lines